@georgeob1,
Thanks for the kind words, George. Like you I would never ignore a poster just because they didn't agree with me. Often that is where you are most likely to learn something.
I might be tempted to ignore posters who just "spam" or who are routinely incoherent, but I would prefer to just skip over their posts. I have enough self-discipline to effectively "ignore" them without having a need for a machine to do it for me.
But even aside from all that, it's self-defeating. It may prevent you from understanding the context of posts being made in a thread in which you are participating.
Just my opinion, but I tend to view people who want to "ignore" others, and who are often anxious to publicly announce that they have done so in the hope of receiving "congratulations" from their homeys, as being hopelessly intolerant of dissenting opinions. Bigots, in short.