> Python 3 provided no extra value at a high migration cost and painful library ecosystem issue I disagree with this. There was a lot of value add for specific

> Python 3 provided no extra value at a high migration cost and painful library ecosystem issue I disagree with this. There was a lot of value add for specific (and relatively common) workloads. If you were doing unix automation you didn't gain much (but I argue this is because unix does unicode bad, not because python). But web development did, even if most of it wasn't obvious or was too soon to be obvious. As for c++ the effort the language goes to to maintain backwards compatibility has costs, both in terms of syntax and semantics. Those costs push people to rust etc. Much the same that migration to py3 pushes some people to go. It's difficult to say which is right without the ability to time travel.