Captcha hates lack of persistent cookies, VPNs, location mismatches, and more (seems like captchas and privacy are opposites with how much they conflict). The short bit I used a VPN (a month or two) on my phone using a different location, I got more captcha tests popping up than in a decade prior. When I used Chrome, I got a fraction the captcha tests as the more privacy-focused browsers. I used to be able to pass close to 19/20 captchas I'd get, but now they're doing stuff that makes no sense with it (including just administering another test right after passing one). Captcha probably blocks bots less than humans any more, since bots are usually designed to get past captcha in some way or another.