Yes. I’ll never forgive IETF for standardizing CGNAT back in 2013. They should have just said “no, deploy IPv6 with a transition technology”.

If that had happened, IPv4 would likely already could be regarded as a relic of the past.

The ietf standardization was irrelevant so I would give them some slack. ISPs were using CGNAT already in a widespread fashion. The ietf just said, “if we’re gonna do this shit, at least stay out of the blocks used by private networks”.