This is quite an alarming attitude that seems to be most common among the Python community. It seems like the 2->3 transition filtered out devs who felt strongly about backwards compatibility and the remaining devs have relatively little patience for objections against breaking changes.

There is a huge benefit to keeping existing code working as it is. Both for businesses and the ecosystem. It benefits everyone if the language does everything it can to keep that intact.

This is the same orange site that thinks the Python 2 to Python 3 breaking changes are still relevant and worth arguing about in 2021.