What Crockford did was enable a lot of devs to realize there was a viable development platform built into the most prolific and open network client in the world. For that he should be commended but it should have never been taken as “this is a viable general purpose language”.
I would argue that ASM isn’t “powerful”. It’s direct. You can access advanced features of a CPUs architecture with the trade off limited portability. Sometimes it’s necessary but power comes from being able to express complex control and data structures in a concise and readable amount of text.
The subjective topic of what “concise and readable” means is where the language wars come in.