OP might have made their statements tongue in cheek.

But there's the truth in there that even programming languages that are 20 years old had a completely different mindset applied to their design process than the original Unix shell which was much more ad-hoc.

40 years ago IT was a completey different environment than 20 years ago.

Not tongue in cheek at all, python might be 20 years old but is continually developed, has come all the way to have a typing system and has a huge ecosystem for all things devops