My daughter plays it and had never asked for money to buy stuff in game. I’ve monitored her playing and it’s a really neat platform tbh. I wish I’d had something fun like that to play when I was younger. It feels very Nintendo in the way it tries to build a safe, fun community for kids to inhabit.
That is the thing, though: you really should be involved if your kid is playing these things, and ensure you’ve setup good stringent limits. All of my device’s purchases are locked behind fingerprint auth. I’ve definitely done the due diligence of going through all the parental controls and locking everything down.