I mostly agree with you except the simple syntax with one way of doing things. If my memory serves me, Java supports at least 2 different paradigms for concurrency, for example, maybe more. I don’t know about C#. Correct me if wrong.

But that's only because they're older and were around before modern concurrent programming was invented.

In C#, for example, there are multiple ways, but you should generally be using the modern approach of async/Task, which is trivial to learn and used exclusively in examples for years.

There is no one paradigm for concurrency, no method is strictly better than the other. Channels are not the only primitive used in go either, so it's a bit moot point.

What's important is how good primitives you have access to. Java has platform and virtual threads now (the latter simplifying a lot of cases where reactive stuff was prevalent before) with proper concurrent data structures.

What are Javas 2 different paradigms?