You choose to install it on your website if you own a website, but if you're surfing the world wide web, then a lot of the places you visit are increasingly being gatekept/hidden behind Cloudflare pages meant to "challenge" you if you take anti-fingerprinting measures.
Presumably these include any measures which would counter their operating model of tracking users on the web, under the excuse of stopping bots.
Presumably these include any measures which would counter their operating model of tracking users on the web, under the excuse of stopping bots.