

I don’t think the commenter wanted drivers to let people squeeze their wheelchairs into their tiny cars, rather that taxis are convenient because they can probably specifically request one that accommodates them. I’m guessing Uber doesn’t let you do that, but I somewhat certain Lyft let’s you notify potential drivers that you are wheelchair-bound in case their car cannot fit you.
From my assumptions, the drivers see ahead of time if you use a wheelchair because the app asks you to mark yourself as a wheelchair user.
So you’d only be accepting it if you wanted to.