I hope I misunderstood Skyline, but then Yang Bang said this:
"When a person is strictly under/overweight because of the lifestyle they choose to live, that's "uber" disappointing. Of course, there's a range for what counts as a healthy weight and it varies by individual, but if someone is 20 lbs under/over because they eat poorly and never move, that's grounds for being at the end of critical remarks."
If I hadn't seen blatant "size-ism" in the gay community, especially among younger people, I wouldn't give it a second thought, but I've been at tables at the local coffee house, like the Abbey in WeHo before it went crazy bar place, and heard the catty comments from my friends about overweight and underweight guys. It always makes you wonder when you leave the table what comments are made about you.
I am okay with the large person having to buy two seats if they won't fit into one without spilling over into the next seat, but not the judgment, especially given that overeating is often a symptom of some deeper hurt, ditto for undereating.