I will repeat it. Roblox is not a daycare. If you want your kids to go online and play games, then supervise them.
Sorry but the ipad isn’t a fucking pacifier. If you want to leave your children unhindered on the internet, Roblox or whatever, then that's on you. If you aren't looking after your child’s well-being, then don't expect some game to do that for you.
The mental gymnastics people put to place the blame firmly on online games is maddening. I expect those who disagree also let their kids run around the supermarket unsupervised.