The simplicity of it is logic defying. It used to be that you had to find crosswalks or move puzzle pieces or type blurred letters and numbers, but NOW all the sudden I can just click a box and HEY!, I’m human?
That’s hardly the Turing Test I’d expected.
Cloudflare has a bot score. Depending on how sus your bot score is you can use several different levels of verification. The checkbox you refer to is kind of in the middle. There is also a more complicated intrusive captcha and a totally transparent javascript. It’s a pretty slick system.
I like that when I’m on tour browser with VPN behind it they’re like “Yeah, cool, go on through”