I don't find it annoying as long as it don't make my ears bleed or it ain't annoying
I on the other hand mostly use HLSS for Synergy when a map stops continuing, or for other reasons , i don't do it to annoy people, i stop if they don't want me to do it, but if they're okay with it or whatever, i'll do it if i feel like it
My sound clips aren't annoying, some maybe a tad loud, but that's cause i was too lazy to make it lower, but that's only some, most of my sounds aren't loud
One time i was playing Synergy with Crackbone (Seen in several Gman Squad episodes on Youtube), and we were in Half Life 2 Episode 2 in one of the vans and he said "You what we should be listening to right now? What is love, baby don't hurt me, don't hurt me, no more", so that inspired me to put that song on my list, haven't gotten to play it yet though, ah well