Apparently people don't like the name "ECMA" because it's too close to "Eczema" which is a nasty dry/itchy skin problem. And I agree, because I have it too.
It looks too much like "Acme" so it gets confused as a joke about cartoons. It looks too much like "acne", that is a too common skin problem, and it looks too much like "eczema" that is a rarer nasty-looking skin problem.
Whoever created that name should get a prize.
Anyway, the community not adopting that brand doesn't mean one can't rebrand JS.