So the answer is pills that can damage your health while having no long-lasting benefit?

One other hidden cost - all the body of knowledge (courses, tutorials, books, blog posts, etc) that we have accumulated over the years for IPv4 would now start being slightly incorrect and misleading. That's no longer the IPv4 that we know - it's rather something like IPv4.5.

Instead of inventing new IPv4 mutations and pouring energy into getting them adopted across the Internet, causing incompatibilities and countless lost hours of debugging, adopt IPv6 instead.