I certainly wouldn't be offended if someone ignored me. I realize that some of my views and the way I express them are offensive or problematic for some people.
For myself if someone repeatedly posts replies that I find add nothing to a conversation and are just negative I'd consider ignoring them. I have only found one such person on this forum and have ignored that poster.
I know that on some posts I've gotten a message that someone I've ignored has posted or replied to a thread I'm watching or I think quoted one of my posts and I've been given the option to see their post. It's been a while since that's happened so I'm not sure exactly how it was worded.