As a blind person, I genuinely believe that hCaptcha, being as terrible as it is, is still the best solution among the ones that we can physically achieve in the world as it exists right now.
Audio captchas don't work for people with hearing issues and/or who don't speak your n supported languages, where n is usually <10. I've had to help people out with these over the phone, it was not fun.
Even for people for whom they do work, it's worth keeping in mind that bots can solve them by now, and so users whose activity looks too fraudulent, who are still given access to the visual captchas, have to be blocked from using the audio ones. I have also seen this happen.
Text captchas are a non-option by now, they're very easy to solve with LLMs, and the way they have to be phrased makes it impossible to align LLMs not to solve them, like you can do with the visual ones.
Google's ReCaptcha can get away with having no actual challenge for most users, blind or otherwise, but that's because they're Google, they do enough user tracking that they don't actually need a captcha. Google is the only company that can get away with this, and even for them, it doesn't work in all situations, even when the user fully trusts Google and has not adjusted any privacy preferences.
Sure, you could stop using captchas entirely, if you're fine with receiving dozens of viagra ads on every single platform each day, abolishing all "contact us" and comment forms on the internet, having a significantly higher credit card fraud rate (which translates directly to higher prices and a much worse experience for consumers), and getting all your semi-public records and social media activity immediately scraped by shady companies and sold to anybody who expresses any interest. Unsurprisingly, most users are, in fact, not fine with this.
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