I would guess that he does read this. In fact, I would bet my shelves full of his books that he reads this. He certainly read smog.net when the Bukowski database lived over there. I would also bet that if you asked him he would say, "No, no, no, forum? What forum? I don't know what you're talking about."
Martin's dedication to Bukowski and modern poetry in general is unquestioned. But remember, Black Sparrow did come to the brink of failure. He said himself in Born Into This that they turned their first profit the very month he was ready to throw in the towel. If LouJon (or some other indie publisher) had the same deal with Bukowski and been able to publish as much of his work as Black Sparrow did, would they have failed? We can't really say, because they didn't have that opportunity.
Martin is a good businessman, but take Bukowski out of the Black Sparrow catalog and you do not have the success that it became. Just wouldn't have happened. And if you take Weissner out of the mix, would Bukowski have had the same financial success? You have to admit the answer is 'no.' So it was the synergy between the three of them, in a lot of ways, that made the whole thing come together. It was what it was.
My personal beef with Martin is just that, a personal beef. It doesn't cloud my opinion of his accomplishments, but it does cloud my opinion of him and his business practices.