> Async infrastructure allows your stuff to be sync or async. While sync infrastructure forces your stuff to be sync.
Is that specific to the threading model for Python?
The reverse is true in nodejs where once you’ve got one async call, the entire chain must be async.
Python is the same as JS.
Async function (that returns something you need) can be called only from async function. That's why autor of this specific rendering framework/lib chose it to be async. So that the user functions called in components can be either sync or async.