Here I go about the batteries included vs micro thing. People pick Flask because it looks approachable but then DIY features in. The same thing happens with Sinatra+Rails. If the python ecosystem grows and other communities come in, maybe they will bring their culture and standards in.
Take poetry for python. It's basically, "hey ... cargo/yarn/mix/bundler all kind of figured out these ergonomics". Poetry's "why" section in the README really resonated with me. Cross pollination of ideas across tribes is _good_.
But then, I'm biased/blub-paradox of course. And it's definitely in line with the productivity/DSLs/rapid vs types/verbosity/slower modes discussion.
Fun fact, D language forum website is probably one of the fastest and the most responsive websites on the planet [2], and it's written in D but not based on vibe.d or Diamond [3].
[1] https://code.dlang.org/packages/diamond