PEGI was right to change its rating for Balatro, unfortunately they still don't seem to understand why. This kind of absurdity is bound to happen again if they keep sorting games with what looks like a basic word filter instead of looking for how the game would present a problem depending on the audience.
Their new rating has been lowered because Balatro has "fantasy elements". Does it now? Flashy effects on cards, sure, but everything in Balatro is a simple set of mathematical rules. You could make a completely physical version of Balatro (if you don't mind spending a lot of time tracking scores and joker rules).
The real reason Balatro does not need 18+ is the same reason you don't worry about kids playing classic Solitaire. In fact, you should worry more about Solitaire nowadays, what's with making Solitaire Collection an adware with subscription.
Balatro is not predatory at all, it's a buy-once game with completely abstract scores and nothing to win or lose in real life. It only borrows poker card combinations. You don't even place bets in this game!
If "fantasy elements" is now enough to make your game kid-friendly according to PEGI, watch EA rebranding its disgusting lootbox nonsense as magic sportsball cards crafted by elven wizards or something.