This would be good for help commands, so then multiple people can be scrolling through it at once using reactions. It would also help for private things like authorising a payment or something (not sure how or why you'd want to but it's just an example).
It could act as a DM in a server, as its a bit of a hassle for a bot to say "I've sent it to your dms", then you have to go to your dms, type a few things, then scroll to find the server which you just came from, and then try a command only to then realise that that command is incorrect and it wasn't -helpme it was -helpus
I'm sorry lmao I rambled on there. Just suggestions