Would be interesting to hear what levels you think those are because as someone who has been learning and writing C++ and Python for over 20 years now, I'd say there's no level of Python which comes even close to the complexity of C++ at a comparative level.
> getting something from e.g. Python 1.6 to run on 3.12 is an exercise in trial and error, or unexpected surprises at some moment at runtime.
Fair enough. But then again: that's irrelevant for any new project written since about the start of the last decade. And to continue the C++ comparison: whereas Python 1 -> 2 -> 3 imo solved some real issues, the consecutive C++ standards never did this resulting in something which is, yes, backwards comptible (roughly - try getting 30-40 year old code getting to compile with /std:c++latest and /Wall - or look at all those tiny behavior changes between the last couple of standard iterations) but also seriously plagued by that as it holds back innovation. Modern C++ minus a lot of the old UB-prone stuff would definitely be better and less complex than what we have now.