With a small number of deps where you skim the development DL, you know if there is a security issue or a cool new feature you want. Also it has more of the Unix C philosophy of don’t break stable APIs in new releases. So upgrading mostly just worked. (Stuff like deliberately breaking old SSL protocols aside). (Until python 3 of course.)
They also don't have thousands of projects depending on ridiculous packages like left pad because they actually have a standard library.
The surface of vulnerabilities and the brittleness of the entire ecosystem is the bad thing, not the warnings.
> You notice you have thousands of outdated dependencies and that's a bad thing?
This is a weird reply considering that the OP literally said those were a good thing:
> Oh, `npm install`? You just found out you got like 1000+ vulnerabilities. Alright, good thing it told me actually, let me update.
The bad things are in the lines that follow.
On the other hand his php project from 2011 still works, just as my perl stuff from 2006 still just works.
You notice you have thousands of outdated dependencies and that's a bad thing?
I used to work a lot with python years ago, and the only reasons we didn't have this problems was because the packages management was so terrible that you didn't even notice you had to update dependencies or that they had vulnerabilities.