That is their whole point. As an alternative Captcha Method, they double the risk of false positives being abused by bots but likely due to anti-discrimination laws against the disabled, they are necessary. The solution: make them impossible to solve so you follow the law without exposing you to any risk of false positives. After all, who's gonna believe a cripple that googles captchas are impossible. Must be their fault, they are disabled after all!
google captcha is an absolute no-no since it does not work with noscript/basic (x)html browsers. They can download/play an audio file and send back user input in an html form thru TLS.
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[ 2.4 ms ] story [ 30.9 ms ] threadhttps://cosmicskeptic.github.io/blog/captchas-dont-solve-any...
Google could look at your web browsing history over the past 10 years and every search you've done and decide based on that that you aren't a bot.
But people don't like long term tracking like that, so instead they need extra info to figure out if you're a bit or not... Hence a captcha.