Why is the captcha "I'm not a robot" popping up everywhere and everywhere?

Question

CAPTCHA

Why is the "I'm not a robot" captcha popping up everywhere and everywhere? More than once I came across, I go to the site, I press the button - nothing happens, or even the styles are not loaded at all (it was like that on Habré), I look at the console, and there 403 Forbidden. And scripts and styles are loaded from another domain. I copy the link to js. I open it - and there it gives me a tick saying that I'm not a robot. Put - everything, the site began to work, styles and scripts began to be loaded.
So why do this? This is overkill, I'm well-versed, I can fix such a problem, but an ordinary average user will just take it and close the site and may not even come back anymore ... I understand there to protect pages from bots, etc. but script files and style sheets, why?

Answer 1

So you are sitting through tor or proxy, or you have an Internet provider "not ice".
Not for this at all.
The checkbox "not a robot" is issued by cdn providers to protect the site from DDoS