Expect CG-NAT boxes are expensive, and introduce another point of failure into the network. Most mobile carriers are running IPv6 first networks these days anyway.

Like you said, CG-NAT does have the benefit of making v4 address reputation less reliable, which means it's not as big a deal for the transition to v6.

>CG-NAT does have the benefit of making v4 address reputation less reliable

heh, less reliable is doing a lot of heavy lifting there. You mean "complete and total trash". We need to get to the point where Cloudflare/AWS/some other big sites just block CG-NAT nodes for a day going this IP address is a risk.

Instead if you're a website, instead of doing an easy block by IP, you're left filtering out AI crawlers, spammers, and lots of other crap hiding behind a single IP with thousands of other users behind it, and ISPs that don't really give a shit about doing anything about it.

We need to push the value of IPv4 to nearly zero and finally move away from that crap.