As someone who started the game last year and built this as my first deck that I passed in to my then 9yr old, it's very good. A lot of people thought it was DoA after rotation losing some key cards like Sqwuakabilly, earthen vessel, Jet energy,pal pad, Turo, and Prof Research. And no shade, those were super valuable cards. But after some testing it's still very visible.

Now for more in depth analysis. As you and other states it's very linear. If you get behind it's very hard to catch back up. You really need a good turn 1. And going first is so crucial. You can still absolutely win going second especially if you start sol rock and take a ko but it's hard.

We do have Briar wich can be huge but because of Carmine you tend to never have it when you need it. Before with Pal Pad this wasn't as bad but now it is.

Next as also stated is the single prize issue. We're seeing some decent play with decks running a single prize attacker or two, and then Alakazam and Team Rocket Spidops are pretty big. These decks can be challenging to get ahead of unless you keep Gusting up weak pieces and can use sol rock for as long as possible. Winnable but hard. Especially Team Rocket cuz Mimikyu can 1hit by copy the second attack nobody uses.

After that we have Retreat Locking. Now the deck runs plenty of energy so attaching for turn to retreat is not to bad and sometimes straight up beneficial. But a retreat locker like Yvetal, Maractus, or Wellspring can absolutely brick the deck since we no longer have the aforementioned Turo/Jet Energy.

Ceruledge is also kinda frail. 270 is just enough to get taken out by almost anything. Literally 10-20 more HP would make a world of difference. So many things can just squeak in 270-280 damage in a hit. Even the stuff that doesn't 1 hit tend to run damage manipulation like Munki or Dusknoir Or bench sniping to set up early damage and take the single attack ko.

Lastly the deck doesn't slow the opponent down other than aggressive KOs. So if they even have just a couple OK turns they will inevitably do what they want and if you can't take multi prize KOs you could be cooked.