They're talking about ReCaptcha v3[0], which is completely different in comparison to current ReCaptcha that requires you tick a checkbox. The new version analyzes your behavior across an entire website and, when the website requests your threat score, it returns 0.0-1.0 with 1.0 being considered human.

The problem with this new system is that it doesn't solve the problem developers wanted to solve before: preventing unauthorized signups. Most developers don't want to know how likely it is that a user is actually a bot, they just don't want bots signing up for user accounts. With the new system, Developers have to decide what to do with a threat score. Should 0.5 require some interstellar page with a v2 captcha? Does a 1 or 0.9 mean they should give them access to certain data that might be otherwise hidden from boys? It's something developers generally didn't need before.

We likely won't see the "i'm not a robot" checkbox (/invisible recaptcha[1]) go away anytime soon since v3 solves different problems, but it does mean websites might start sending you down different verification funnels depending on how human Google thinks you are with no way to solve a Captcha that proves Google otherwise.

0: https://developers.google.com/recaptcha/docs/v3

1: https://developers.google.com/recaptcha/docs/invisible