Just remember we got rid of TLS 1.0 the same thing can be done with IPv4. It’s time for browser makers to put “deprecated technology” warnings on ipv4 sites.

There are a lot of decades old embedded systems out there. Every so often you hear about a big company still relying on floppy disks and other old tech, including major railways and airplane companies. Having the source code will help with debugging better than having to disassemble or other reverse engineering.