It's a perfectly understandable failure, especially considering your position, so don't fret too much over it! Simply put, an ignore feature would allow me to engage in the helpful conversations I enjoy, instead of having to sift through the conversations I especially do not enjoy. The end result would not be the same due to the fact I won't have to exhaust myself by doing the sifting, since the feature will take care of the big problems. There are times I have to turn off !main because certain repeat offenders become such a pain. With an ignore feature, I will not have to. There may be conversations I am missing pieces of, but they are not trying or exhausting to sort through. This would mean more participation in the community for me, not less.
I see! Sorry, your first two posts made no mention of your concern over a division in the community, and you only discussed either how confusing it might be or how ineffective it might be. Consequently, I assumed those were your points. I can give you some consolation, if division is your concern. While this is a feature that I think will enrich my experience and help me engage in the community, an opinion from someone you likely trust more is as follows:
So it would follow that there would be as much division or not division with or without the feature, since I will participate equally as much with or without it. I disagree with this opinion, as you have read, but perhaps this will ease your concern.