I sort of remember when T-Max was first introduced (early 80's?). I was in school, and a bunch of us photo majors gave it a whirl. Initially (at least in 4x5) most of us had a hard time working with it. Our results were inconsistent, at least with the developers we were using. Since then, though, I've found it to be a fine film, and am still pissed off they discontinued it in Readyloads.
In truth, sometimes I think "old-timers" will naturally have a bias towards earlier films (at least at first). They learned on them, became proficient with them, and developed an expectation of what a print should look like. When a new film doesn't deliver the same look, it's natural for them (and I include myself based on my early experience) to think it's not as good.