Honestly, I think it's more that the culture of the game has changed.
Back when I started playing, you ran back to your corpse with the odd
hope that maybe you had three pieces left, but otherwise expected it
to be empty. Now, there's a smaller playerbase (less people hoping
for free loot, etc), older playerbase that generally is aiming for
other things to do than regear, and in *my* opinion one of the worst
problems is a perception that you just can't compete with *far*
higher quality of gear than previously. Regear just doesn't "cut it"
for people, so they get crabby that now rather than just getting back
at it, they have to regear at all, AND have a perception that they
have to go after better (more time consuming) gear than they once
did. I do think the prevalence and consolidation of the truly
exceptional gear is causing some of this, and perhaps something of an
issue. Back when, red dragon and two nightwings had you in decent
shape against 90% of the game except maybe 2 out of 40 that had a
REALLY awesome suit. Now, those full suits seem more common.

All of that said, I don't believe the Immortals ever have any general
hatred of full looting when the gear's finding use. What WILL
almost certainly get you mocked is dishing out full loots when you
can't handle getting looted yourself. Also, (and this may vary
more individually) being classless and full looting JUST to be a
prick will get snarky comments at times, but I can't think of a
single situation in which a character's actually received punishment
beyond a snarky title at worst. It's part of the game, we want
gear circulation, it's more a culture deal.