I'm fairly strict about content and usage with mine, and she plays the heck out of Roblox. I've played with her. This has not been my experience at all.

I've heard there are some SERIOUSLY dangerous people / groups on the platform, but that's true everywhere to some extent and we haven't had issues. I don't think I've ever come across something inappropriate, in fact. What makes you say it's a cess pool of porn and Nazi shit? Not attacking you, genuinely just want to know for my / our benefit.