Well maybe, but I have absolutely no doubt the engagement hours are still massive. Roblox is one of the main online destinations for kids these days, above even minecraft servers it seems.
The "paedophile hellscape" seems like a short-seller slur to me. No doubt there is some element of this on such a big platform, but it seems vastly overblown to me. I have yet to see anything really suspicious, with kids of my own, and also using roblox/roblox studio in coding clubs.
The payout % for creators, well that could be labelled a hellscape perhaps...