I didn't say it was, but in the example given basically everything was, hence the complaint the parent made was that in JS we are often writing a lot of await, or promises or what have you because we have a lot of things that need to be done sequentially in a particular part of the program, or, in a small script, where everything needs to be sequential.
It's not really a JS issue here, just the ZS project decided to make `$` function async (for some good reason I'd think) but they could have gone the other way and make it synchronous by default.
I don't believe this is a language specific choice, they could have done the same with C#
