To be fair though, in 10 years time I'll still be able to build the last release version of Python2 (quite likely using a modern-in-2029-C-compiler) and use it

To be fair though, in 10 years time I'll still be able to build the last release version of Python2 (quite likely using a modern-in-2029-C-compiler) and use it to run whatever stone age Python2 code in need to run. What people seem to be getting uptight about here, is that the volunteer Python language devs have collectively chosen to not fix any bugs or security problems discovered in the older Python2 language interpreter. I can't quite get my head around what the equivalent for that in C would be? There kinda _are_ no "language security features" in C, right? C is the archetype "How powerful a gun would you like to shoot yourself in the foot with today" language.