Believe me, hCaptcha isn't much better even if you're not blind! They show me minuscule images which are barely distinguishable from each other. It manages to be much worse than reCaptcha, which is some achievement.
I'm not blind, but do have visibility issues. I can get by on my phone with maxed text size, etc. The pictures for hcaptcha are horrible... I keep having to zoom in and out. It's almost as bad as modals that flow off screen.
It sucks more when you work in the space and take a lot of care to usability. It's not that hard most of the time.
