Ultimately, I've come to the conclusion that Stephen Wilson is a humorless wimp who, over time, refined a production technique that had the potential to suck the life out of whatever it encountered. He's a prog guy who women can get into.
And I'll always dislike him for ruining Opeth, as well as for endlessly trying to glom onto 1970s prog history, by doing all of those useless remixes. He's kind of like progressive rock's Jack White in that regard. But whereas I can at least entertain the possibility that Jack White might have been a rock star in the 1970s had he been born 30 years earlier, I have my doubts that Steve Wilson would ever have amounted to much under the same circumstances. He just builds too much with other people's materials. At best, he possibly he could have been in a derivative but still somewhat interesting band like Happy the Man.
I also find the extent to which he is revered by so many prog fans to be annoying in general
Anyway, back when was just the front-man for an ambiguously proggish band with Radiohead leanings, his positives outweighed the negatives.
Lastly, it somewhat contradicts my earlier statements, but I do think that his latest solo album (the horrifically titled 'Hand. Cannot. Erase.') has some good songs on it. It's better than later Porcupine Tree albums, IMO.