Not that much work. You can have a bot find the inactive npubs for you.
Discussion
They used to be really unreliable, unfollowing active people they couldn't see because of relay settings. Haven't looked in a while.
The one I use doesn’t unfollow for me. It just tells me who they are then it’s just a few taps away.
Which one?
DM this npub saying hi
nostr:npub1cc79kn3phxc7c6mn45zynf4gtz0khkz59j4anew7dtj8fv50aqrqlth2hf