As a parent with two kids that used Scratch during 2020 or so… be cautious. The web community was an unregulated social network with follows, likes, comments, and a wide age range (apparently) of people interacting. Around that time, there was a lot of inappropriate content, some bullying, sketches about self-harm, sex, etc. Perhaps they’ve fixed the issue. If not, I would try to install it locally and keep them away from the official website.
Incidentally, I later came to believe that the visual coding impeded their ability to learn text-based coding. That was just my experience and I don’t have formal research to back it up, but I still wonder about it.