Well... you didn't read my post. I started by saying, "even though I agree that few people will end up liking Tool much". That is to say, even if they do give them a fair listen, most'll probably end up not liking them too much because of other reasons stated.
My point was largely incidental; it was not related to the argument. And it is simply that most of those who attack Tool (and ANY OTHER BAND, for that matter) have generally never given that band's whole discography a fair go. It makes sense, as there is only so much time available to each individual, but nevertheless, it is true. And that goes for whether or not they'd ultimately end up liking the band, had they bothered; that much, there's no way of telling.