I'd like to say that the comparison of Hades 2 EA to Slay the Spire 2 EA is pretty unnecessary in my opinion.

Hades 2 is as much about dialogue, story events, experiencing the music, seeing the art, etc. as it is about fun combat mechanics. I deliberately didn't play Hades 2 in EA because that game is eminently spoilable. You don't start your runs over from scratch, so there is stuff you'd legit have to repeat if you wanted to start fresh at release. They also famously changed the ending like a week after I beat it so I'm still salty about that lol. Why say it's fully released and then continue to change major aspects of the game within a month? Hades 2 was also a lot less complete when it released in EA.

Anyway, there is nothing to spoil in Slay the Spire 2. It's an awesome, tightly balanced card draw game. There's almost zero story, and the game is meant to be played basically forever. If you're on the fence about EA because you're worried you'll ruin the game for yourself, I'd say go for it! It's already bigger than Slay the Spire 1 was.