There is one way, although it is not 100% reliable. It happened to me several times that I wrote a post in a topic that gave a direct answer to the question, it also received merits, and then a member who is not a classic shitposter appears and writes a post that is 80% identical in terms of what I wrote. This is a more than good indicator that that member has you on ignore, because if by any chance he had read your post, he would not have repeated everything you said.
Also, if you are considered an average poster with somewhat high-quality content and you have never received an answer or merit from a certain member, there is also a high probability that you are on his ignore list.
Yeah, that's it. I quit agreeing that this pattern can work 50% of the time. There is a case when some users made wrong comments and two different users quoting the same replies, which possibly makes me assume that the user has ignored the other user.
But for me, I don't think putting any user on ignore is a very cool thing to do. If the user whom you want to ignore is a shitposter, then the best thing to do is just report the comment, as you have contributed to keeping the community clear of shitposts. But if I don't want to do it that way, I can just skip the post and go to the next one.
Cheers 🥂, Dr.Bitcoin_Strange 👺👺