I think all three of those games are already passé for children. The people who grew up on Minecraft and Roblox are now in their twenties. No idea what actual children are playing these days; probably gacha games on their phones or something?
Minecraft is still the shit and getting passed down to younger generations. If you go to the gaming category on YouTube while logged out and (optionally) connected through a VPN, you'll see these games are far from passé.