It used to be that a significant portion of that 1% (and those that also turned off CSS) were from those leveraging screenreaders some years back; with the upta

It used to be that a significant portion of that 1% (and those that also turned off CSS) were from those leveraging screenreaders some years back; with the uptake of ARIA and better screenreaders, not so much the case anymore. So there was once a definite use case for supporting them in a B2C context, at least. You still see it in .edu/.gov/.mil quite a bit as a requirement (Sec 508, et al).