Zero, that feature is annoying especially when you can't see what someone has quoted. I mean It's the internet it's not that difficult to avoid someone.
I can't be bothered to put people on my ignore list since I don't care that much so 0. but I did ignore that one Ciara stan who posted those nasty **** gifs the day Basic Instinct flopped.
None even if I dislike your comments you don't move me that much to put you on ignore. If anything i'll just scroll past your comments in threads at most