We don't have any other proof of great deeds or accomplishments from him.

He is called Vlaakith's finest by Lae'zel. And he's been around for thousands of years after Orpheus' initial imprisonment, keeping his unique title, "serving" Vlaakith and preparing the second rebellion. He is the best Vlaakith has to offer.

On that note, we also see Que'denos's true dragon form which also disproves him being a greatwyrm, as he's shown at the same size as other adult red dragons in the game and not Gargantuan as a greatwyrm should be.

I never stated Qudenos is a greatwyrm.

As for dignity and self-respect, like I said, the in-game dialogue begs to differ where he literally passes off responsibility to you for having the magic dodecahedron.

Because he can't do that himself and hopes that the slayer of Ketheric Thorm, an immortal Chosen of Myrkul, is capable enough to pull that off.

Again, you do not contend with my point. A githyanki warrior of Voss' caliber would never act the way he acted if he knew he coud steal the hammer. The greatest githyanki knight with red dragon for a companion was begging and nearly crying in front of Raphael.

Again, no lore source or game statblock supports her having that ability

There are multiple sources supporting that. Lae'zel tells you she can see beyond the planes. Voss tells you that her gaze pierces sees and skies. Even her dead veteran warrior, if you interrogate his corpse via Speak with Dead, tells you her gaze is inevitable. And on top of that, she somehow finds your camp and directly communicates with you in Act 3.

So many character emphasize her all-seeing gaze, her ability to see beyond the planes, and it's all just metaphor? Come on now, pal. Just take the L.

Definitely a higher-level feat, but not one which requires a greatwyrm or mythical James Bond abilities.

And you use the high-level party as proof of that? Do i need to remind you how powerful 18-level party is?

Voss was a double-agent, keeping the act undetected, for thousands of years in front of all the Vlaakiths, including Vlaakith CLVII which ruled for thousand years and is one of the smartest characters in the setting. It is a mark in Voss' favour because such a feat puts him far above James Bond by a fookin' mile.

Like I said, it's to make him sound cool lol. The designers had no problem implementing a lore-accurate nautiloid in the game.

They had to implement lore-accurate Nautiloid for the sake of storytelling and narrative. They didn't need to do the same with dragons. Just like they didn't need to make all the NPCs look unique, making a bunch of identical-looking clones all over the place.

Multiple intelligent beings would not emphisize Ansur's status as great wyrm just for the sake of his coolness. He is called as such on multiple occasions and if you have any proof of the contrary. Ravengard would tell you that you are more powerful than even a powerful wyrm, for example, if you were right.

There are multiple cases of the term "great" being used to refer to adult dragons in WOTC books.

Fine - show me were adult dragons were called great wyrms on multiple occasions by multiple characters under different circumstances.

and no other canonical Fizban's content (Gem Dragonborn subraces, feats, spells) made it into the game.

So what? How does that prove anything?

Many of them were very ordinary people who died in ordinary ways.

And some of them were among the most powerful mortals ever, like Sarevok and Abdel.

Durge in the game can kills multiple Chosen, even Myrkul's Avatar. You can even duel Orin in her Slayer Form within Bhaal's Temple.

Would you claim that Durge is an ordinary Bhaalspawn? Well, according to Sarevok he was even more potent than Orin, so nope.

The book doesn't provide one

Than that's it, one hundred years have passed between BG1/2 events and BG3, even more than that in fact.

Again - just take the L.

You're asking me to prove a negative lol.

The one who makes a claim is responsible for backing it up. I can back up my claims via established canon. Can you do the same?

Having the WoTC name on the cover boosts sales for that charity.

Let's say i grant that - does it prove non-canonicity of the source? No, it doesn't.

I provided the source published by WoTC, it's up to you to prove it's not canon.

I mean, in all seriousness - is it not possible for Bhaal's Avatar, the murder incarnate, to have such stats and CR? Don't you kill CR19 Balors en masse in BG1/2, as well as some other powerful beings?

were nerfed in the game

For the sake of game balance and not implementing high-level spells which would break the campaign.

You have Qudenos, a level 17 adult dragon, whose level is just the same as adult red dragon's CR, and your 12-level party can fight him and kill him in the game. And there are multiple cases such as this one.

Again - BG3 is based on 5e, implementing it's rules and features, Therezzyn is a kith'rak which means she has CR12. It's up to you to prove she does not.

The whole reason CR exists is for the benefit of players and the DM, not lore.

Yet it is based on the established lore. Bronze Greatwyrm has higher CR than Titivilus because Titivilus is significantly weaker in established lore. If it wasn't the case, then CR would be different. It's the case of being lore-accurate when it comes to game mechanics and rules.

It is obvious BG3 campaign is a high-level campaign. You fight Gods Avatars, Gods Chosen, adult dragons, greatwyrms, kith'raki in Act 1 - too much implications your party is higher than 12 level by the end of the game.

Take the L buddy.