That's funny, because I see the opposite. Perl 6 was a failure that had to be spun into a separate language and people stayed with perl 5, recently work on perl

That's funny, because I see the opposite. Perl 6 was a failure that had to be spun into a separate language and people stayed with perl 5, recently work on perl 7 started, but as far as I know perl 5 is still the version in use, recently FreeBSD forced me to update perl to version 5.32. Regarding Python, I no longer see 2.7 in the wild (I have no doubt it is still in some places) all projects I'm working on are in Python 3. AWS Lambda supports 3.8 (which is the latest stable version), Ubuntu comes with 3 installed by default. FreeBSD set 3.7 as default, depreciated and will remove 2.7 completely by the end of this year. Many Python 3 packages were released as python 3 only, the packages that that previously supported 2 dropped their support. Currently running 2.7 is a liability. Not as much that it is EOL and there are no security fixes anymore, but also packages dropping support (which is IMO a bigger deal).