Async or not in modules is a huge pain in the ass for web-dev, but thankfully a lot of Python still isn't web dev. As a Data Scientist you can live your life peacefully without ever worrying about this. But I can see why web devs like it, even though personally I really don't want to see anymore Javascript sneaking inty my Python. Especially when there is already support for IO bound concurrency elsewhere in the language. If I want to do JS syntax, I'll fucking use JS. And I really don't want to see Python go the C++ route where it just wants to be everything and do everything so that you end up with so many possible approaches to the same problem that two devs can't read each others code anymore.