It is also because of the word embedded. You can call anything embedded but in our community, generally, 2MB is a rediculous amount of memory and cpu cycles are

It is also because of the word embedded. You can call anything embedded but in our community, generally, 2MB is a rediculous amount of memory and cpu cycles are costly. C(++)/asm are very normal and people are used to that. For prototyping products we use a Forth, but I guess JS could work for that if efficient enough to try it out. Also, this would not pass audits (yet) in some industries. But that's not a reason to be negative; I think the footprint and calling that embedded is not very realistic atm.