As someone who was high school and college age during this period, I can testify that much of the disco hatred was thinly veiled attacks on "out groups" of society. Disco was largely produced by Blacks, Hispanics, Gays, and Women. Disco hating was mainly pushed by white male rockers. There was also a great tendency to call any dance (black) music disco. I remember critics calling Funkadelics' "Knee Deep" disco!
The great joke was that after the disco movement died out, white UK rockers like Duran Duran, Peter Gabriel, and Phil Collins, adapted aspects of disco, and then the same white rickers who were burning and breaking disco records six or seven years earlier, started to incorporate "dance music." A bit later, Flea comes along and adds slap to punk and know Graham, Louis Johnson, etc. get accepted as pioneers by young white musicians.
What is so sickening is that a generation of so earlier, the Blues were given "mainstream recognition" when the Stones, Cream, Jeff Beck, etc. showed how cool that music was.
It says something about America, that Black or Black influenced music can't be respected until a group of whites adapts it.
I know I'm way off topic, but I feel a bit of perspective is important when we talk about old school funk and its great bassists.