> people tend to be pretty slow to update their networking assumptions, so this is still pretty common.

My ISP doesn't do CGNAT in FTTH deployments, but I'm paying extra for a static IPv4 allocation anyway since I was increasingly getting hit with captchas every time my IPv4 rotated to flagged IPs that were trashed by my fellow subscribers with poor infosec practices - i.e. 99.9% of residential subscribers.

Once I got a static allocation, captchas are getting easy to pass.