No kidding. An increasing number of sites are putting up CAPTCHA's.
Problem? CAPTCHAS are annoying, they're a 50 times a day eye exam, and
> Google's reCAPTCHA is not only useless, it's also basically spyware [0]
> reCAPTCHA v3's checkbox test doesn't stop bots and tracks user data
[0] https://www.techspot.com/news/106717-google-recaptcha-not-on...
At least with what I'm doing poorly configured or outright malicious bots consume about 5000x the resources than human visitors, so having no bot mitigation means I've basically given up and decided I should try to make it as a vegetable farmer instead of doing stuff online.
Bot mitigation in practice is a tradeoff between what's enough of an obstacle to keep most of the bots out, while at the same time not annoying the users so much they leave.
I think right now Anubis is one of the less bad options. Some users are annoyed by it (and it is annoying), but it's less annoying than clicking fire hydrants 35 times and as long as you configure right it seems to keep most of the bots out, or at least drives them to behave in a more identifiable manner.
Probably won't last forever, but I don't know what would besides like going full anacap special needs kid and doing crypto microtransactions for each page request. Would unfortunately drive off not only the bots, but the human visitors as well.