There is no doubt that Google's ReCaptcha is the best service to block spam and bots.
But it seems there are also many workarounds to solve ReCaptcha and then abuse the service behind it.
Let's say If someone tries to spam the signup feature and make unlimited accounts, I don't want to hurt the legit users by blocking the Signup system. Instead, I should have that option to switch to hcaptcha.com which has annoying system.
Even Cloudflare uses it now 🙂