In what sense are technical preferences you cannot explain or justify an "ideology"? Ideology is not unjustified/mistaken belief. Maybe you mean cargo culting in technology, of which there is sadly a lot? Or maybe even "let's do this in JavaScript, because it's the only tech I know and I can't be bothered to learn something new"? That happens, but it's not ideological.
You're defining ideology too narrowly.....an ideology is a system of ideas and ideals. It doesn't have to be mistaken, and it can be completely justified and correct.
"I think Javascript is better because I prefer to use technologies I know" can be part of an ideology.
It was the OP, not me, that implied ideology is something negative and linked to poor justifications. For the record, I think ideology is (or can be) a good thing in politics, but a misappropriated term in technology.
> "I think Javascript is better because I prefer to use technologies I know" can be part of an ideology.
But that's not what the OP said. Instead, it was "I think we should use Javascript because... uh... I dunno. Let's just do it!". That's not ideology by any possible meaning of the word.