You are probably right. But also statistically, "nobody" is disabled or needs accessibility features. That's a poor argument for running in the opposite direction from providing them.
Benevolent systems cater to the least powerful user, not the median user, and I think it's good to support benevolent systems wherever possible, because businesses are naturally biased against benevolence.
Again, I like the argument. I just feel there is more taking about it, than benefits from it. Empirically, it just falls flat.