One instance might have separate rules than another, so you can use multiple to get around that. Also if one instance gets shutdown for whatever reason you’ll need another instance to browse through.
Generally though, no. One instance is fine and helps keep the system from getting overloaded with users.
I saw how long the list is and got kinda concerned I might miss out on content since I’m on beehaw, but now it just sounds like I’m getting sheltered from all the internet wackjobs lol