Slowly it dawns on me.
Posts here are evaluated as follows:
1. peer rank of author: 99%
2. accuracy or factual content: 1%
I think those ignore buttons are being pressed by racers and builders. The person they're ignoring is neither.
Personally, I expect that my own peer rank in this group should be low until I have some of my work actually running down the salt or dirt.
I have seen less than one in ten posts of the nearly 200 he has deluged us with in one week be both applicable to topic and not obsolete. That's a lot of good posts, but it's just too many bad ones. Right now, he's creating a massive percentage of the traffic on this site and devoting that space to (for lack of a better term) spam.
I tried to put up with it, but now I'm #18.