Pickles, yes, it is YOUR pet peeve. But, it is not Disney policy.
Disney does mainstream wheel chairs and
ECVs in some lines. But, Disney has decided not to mainstream the bus lines. If you don't like it, fine. Just take your frustration out on Disney. Write them a letter and make your point known.
But, please do not rudely criticize a lady for doing exactly what she was supposed to do.
When I took my 85 year old grandmother to WDW, she refused an ECV. We just walked a little slower. And, she took an evening or two off. But, if she had used an ECV or wheel chair, I would have boarded the bus with her.
By the way, I do believe that there is a limit to the number of people that can accompany the person in the wheel chair or ECV. I think it's 5 or 6. But, I've never seen it enforced. If you think it should be only 1 other person, then complain about that if you must. But, your experience and what WDmommyof4 did are quite different.
Save your venom for someone who deserves it.