Roblox isn't a competitor to Astro's Playroom or Ratchet and Clank. Roblox is like, the next generation of ActiveWorlds, or like a user-generated version of Uru. It's a 3D Chatroom that solved the problem of "what do you do when people want something to do, while standing around chatting in the 3D chatroom?" by saying, "we'll give a bunch of tech tooling to the players, and maybe 0.1% of them will do something interesting with it". And that's enough.
The closest PS5 equivalent would be something like, the Dreams game from Media Molecule.
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As a parent (with a kid, who loves Roblox), I totally get it. I lived on ActiveWorlds as a kid, I saved up paper-route money to pay for my own "P-10 World" back in the day. The next summer, I used paper-route money to buy a "catch-a-call" device, so I could be on ActiveWorlds via Dial-up without tying up the phone line from my parents. I had an entire alternative identity and active social life on there in middle-school & high-school. I would bicycle all the way downtown to local community college, to take VB6 classes with college students over the summer, to learn how to program against their ActiveX control API to write my own ActiveWorlds Bot, to interact with folks in my private ActiveWorld. I ran an ActiveWorlds "TV Station" (in AW, you could set a JPEG image to 'refresh' regularly like a webcam, and I would point the URL at a custom PHP script I ran on an old cPanel-based shared hosting plan, that would rotate JPEG images out in appropriate order every 1 or 2 seconds, in pre-programmed ways, so you could have 'shows' broadcasting, and you could switch to 'live' (screenshots) on 'air' and such)
I treat Roblox similarly for my child. (They can play on it, but never use real names, reveal no personal information, there's some time limits to ensure you don't go crazy, talk through appropriate content and what stuff warrants adult intervention, etc. And gently prod them that, if they're ready to deep-dive on Roblox, all the tools people use to make their favourite "obbys" are things they could actually learn and write themselves, with some time and patience and practice...)