> IPv4 is old and broken

IPv4 is old, very old. But how is it broken? It's literally been working just fine since it came out.

That there are limited addresses is something else: it doesn't mean it's broken.

I don't care that spying/surveillance devices have more trouble spying on me with IPv4 than with IPv6 and I don't care that some apps have a harder time establishing connection.

IPv4 works. SSH over IPv4 works. Browsing the Web over IPv4 works.