> Does C# have the same issue Python does with accidentally calling blocking code? 

This can't really happen in C# except maybe if you are working on a GUI thread and you make the mistake of running blocking code on a GUI thread.

For APIs, console apps, and such, it's not a concern for actual parallel-concurrent code. Of course, if you write a standard non-parallel `for` loop that has blocking code, it's going to block in a console app as well if you don't run it on a thread.

But I think that once you do enough JS/TS or C#, `async/await` doesn't feel very onerous if you have the basic concept.