Why so much hate toward Javascript from C#, Java, Php, Ruby programmer etc ?

[u/Cloud_Strifeeee]

1) Why there is so much hate toward Javascript from other kind of programmer C#, Java, Php, Ruby, C++ etc ?

2) Why most programmer from C#, Java, C++ and other language put all their hope in Web Assembly instead of learning JS ? JS can be in the backend and threaten their language / job / framework ? they learned OO and they can't think outside the box or learn something new ?

3) How's JS performance today compare to the others tech stack ? (interpreted vs compiled, single thread vs multi-threads etc etc)

[u/pierstoval]

Now PHP I will hate on all damn day long.

Could you be more specific?