I'm playing Claire B right now and after knowing what triggers him (especially during the first section of RPD) and what rooms are safe, he stops being so annoying. I still had issues with him in the library, but that's only because I didn't know that you could move a couple of bookshelves in one move.
Lol. Are you serious with this?? Yeah fuck this. I'm not even gonna finish Leon B anymore. Fuck that noise.
Once you leave the RPD you only meet him briefly a couple of times (one time you probably wouldn't even notice he's there if it wasn't for the music change - it's that brief). He stops being the gameplay mechanic he is during RPD, that constantly stalks you, and only appears once in a while to say "hello, I'm still here!". And that's only in Leon's scenario.