I would point out two other short Cummings in the async/await paradigm

1. It makes asynchronous programming look synchronous. I do not like things being other than they appear. The point was touched on with the:

        getOrders(user.id),
        getRecommendations(user.id)

2. On a related issue CPU bound code can block the thread of execution and stop any concurrency in its tracks

In Rust there is the added problem of shoehorning it into the memory model which has lead to a lot of hairy code and tortured paradigms (e.g. pin)