BullShite. Formulistic industrial music production dates back at least as far as 1885:
https://en.m.wikipedia.org/wiki/Tin_Pan_Alley
And it's not that current music is more awful than other awful music of other decades. I had the same feeling at new years party 1992, thinking: there hardly was a proper hit song made past year.
In hindsight, that was solely the effect of me getting older.
Now get off my lawn