The need for proxies in any legitimate context became obsolete with starlink being so widespread. Throw up a few terminals and you have about 500-2k cgnat IP addresses to do whatever you like.
This is very commonly true but sadly not 100%. I am suffering from a shared /64 on which a VPS is, and where other folks have sent out spam - so no more SMTP for me.
As someone who wants the internet to maintain as much anarchy as possible I think it would be nice to see a large ISP that actively rotated its customer IPv6 assignments on a tight schedule.