So, again, #MastoAdmin, please refrain from requiring #hCaptcha on your instance and only use it as a very last resort, when all other measures fail. If you absolutely have to, please provide an alternative sign-up method that safely works without it.
Thank you very much, on behalf of all of us disabled users - and also on behalf of most of the not-quite superhumans here.
P.S. there are also huge privacy concerns with commercial #Captcha services.
inquiline