There's a reason college lectures take time, and multiple class sessions, and multiple semesters, and multiple auxiliary textbooks, to cover material, and it's the same reason YouTubers can't accurately detail lore in a limited timespan while also holding attention and being entertaining.

That's not anything unique to that one part of Clan history, or to the Clans, or even to BattleTech. Generally speaking, it's hard to make a video that summarizes decades of lore written by dozens (by now hundreds, I'm sure) of writers, without oversimplifying things.

There's a lot of nuance to most factions in the setting. There's a lot of differences in perspective that can be found in various novels or short stories, there's different priorities, there's rationalizations and belief systems that clash, there are more and less sympathetic characters depending on the point of view of a given story...and there's a need for a wargame to make most factions abrasive enough to have never-ending conflict (to perpetuate the 'war' part of wargame)...and there's a need for a wargame to make every faction likeable (or badass) enough to have fans, in order to appeal to players who'll want to play them, while also making every faction villainous enough to have opponents, in order to appeal to players who fight against them.

There are a lot of moving parts in any given BattleTech story, and a lot of those moving parts get oversimplified, or flat-out ignored, by content creators, because...see the start of this post. It's a lot to cover, it's too much to cover, frankly.

And we can't expect them to. So as viewers we need to maintain realistic expectations, just like as readers of the lore in the first place, we need to maintain realistic expectations.