I was an active kpop fan back then and honestly the term noise was not used as much (I was active here in this forum too)
Songs like Not Today, Dope, Fire, DDDD, KTL, Boombayah I remember were criticized as loud and for having a loud instrumental chorus.
Its only until lately that I have seen the term noise being thrown around for songs like these, and it got expanded to not only loud instrumental choruses but to the constant beat changes + loud beats + more rap parts than singing parts
But I think if BTS or BP have released these songs lately I think the term noisy would be thrown at them. It does fit the common criteria being thrown for these type of songs
On the other hand I agree that the term is commonly used as a negative term, that is why people really get defensive about it