i don't think i've ever heard someone say something like that.
but i will admit that i myself have judged some using
ECV's.
this generally only occurs because the person has absolutely no clue how to use it not because i think they are just "fat and lazy". my thought is if you can't operate it then you need to be in a regular wheelchair having someone push it.
i'm probably more bias about this than most because i've had first hand experience with someone that should not have been operating one.
it was an old woman that ran it into the back of my foot and just kept trying to go. my foot was stuck between the foot rest and the wheel and she would not stop. i ended up screaming a few choice words while in so much pain that finally someone pulled her hand off of it.
i ended up with a foot that was bleeding and twice its size.
this judgement also occurs at the buses when it takes about 10 tries for someone to be able to center it on the ramp so that it won't tip off the side as they drive it in.
on more than one occasion a CM has asked a guest to get out of the ECV so that they may put it in manually.
if you need it and can properly operate it then use it and to heck with everyone else.
if you are going to be paranoid about what others think or say out of earshot then opt for a wheelchair instead and have someone push you because as unfair as it seems people judge others less when they are being pushed as opposed to using an ECV.
overall i think you need to suck it up though.
i'm visually impaired and have night blindness. many times you'll find me holding onto a friend or family member in the parks. i'm not super comfortable with it but i've learned that its the easiest way for me to no be separated or trip over things in the dark so i do it.
when i went solo last year i brought a flashlight and my cane that i never use in regular life.
i got some people looking me up and down as well as a CM at HS mention my flashlight handing around my neck and made fun of me for it saying "oh wow thats a lovely and large flashlight you have there"
at epcot two teen boys were walking out of the park right next to me and i don't think they even noticed my cane because it was pretty dark and i was holding it straight up and down close to my body so i wouldn't hit anyone with it. they suddenly mentioned something about needing a "blind stick" so that they could hit people to make them move and then just say "sorry i'm blind".
that made me a little more self conscious because then i was worried that they'd see my cane and start laughing but they didn't.
my point is i need to do these things in order to have a pleasant experience at the parks so i just let it go and thats what you should do.