Earlier quoted context omitted.
There's also a 3rd category of users, the bots, and crawlers/scrapers can greatly benefit from some of those invisible accessibility features...
While this may be true we build (non-API) sites for humans. Just because bad actors may exploit tools for differently abled people doesn't mean it's OK to exclude the innocent to reduce ones costs.
No one suggested that, and not all bots are evil - there's still a number of useful web spiders that webmasters can benefit from, it's not just googlebot out there...