And things like ramps and elevators probably only became so common because they help everyone (shopping carts and baby strollers on ramps, saving time and energy going up multiple floors).
That's a good point, but I think we (society) deserve a bit more credit than that. Physical disabilities are common enough that most people have encountered somebody with a visible infirmity, and while there are exceptions (people can be assholes) we tend to be willing to lend people like that a helping hand when we can. Simple gestures like holding a door open, carrying a bag of groceries, clearing a path through a crowd, or even helping someone into their car can really make somebody's day if they're stuck in a wheelchair or hobbling around on crutches. In emergencies, we tend to put the disabled first in line for rescue along with women and children.
I think collectively we realized "hey, this (probably) isn't their fault, and we can make these changes easily enough, and it could happen to any of us so it's for the greater good to do it." There's a general sense that people don't generally
try to put themselves in wheelchairs, so helping them out is a kindness and not just enabling bad behavior. We don't enjoy seeing innocent people struggle (except for psychopaths, but those probably hate trannies too).
Trannies and genderfluids are a
lot different. We (on the Farms) know that 99 out of 100 self-proclaimed "trans" people are full of shit, just chasing a fad and aren't actually suffering from dysmorphia, but even the average person intuitively understands that the whole thing is just fucking weird and creepy. People don't feel the same sympathy for a tranny as they would someone in a wheelchair. Trannies come off as completely batshit insane to the average person (because honestly, they are) and nothing about it seems right. It seems "made up" and the never-ending demands for validation, recognition, "proper pronoun use" and special bathrooms (and access to opposite-gender bathrooms and locker rooms) just pisses people off.
There are certainly obnoxious disabled people who make a spectacle of their disability and have a big chip on their shoulder (look at Russell Greer), but most of them are reasonable people just living life as best they can. Meanwhile, practically every tranny I've ever met in person or online has been fucking insufferable, making a spectacle of themselves by trying to pass as something they're not and by shoving it in everyone's faces like they're something special. They make everyone around them uncomfortable, and nobody wants to help people like that.