> I've never felt that any of the other hybrid/multi paradigm did OO the kind of service described above.

That’s how I feel in general about multi-paradigm languages.

I like mine opinionated: there are very real advantages to a language which has a strong sense of purpose and the corresponding constraints that typically follow.

Sure, Python has functional features layered atop it, but without reliable immutability it’s not nearly as pleasant to work with as, say, Erlang.