I’ve answered this question on this board before, but my thought is there is an element of truth to the OP’s statement. I spent most of my childhood and early adolescence in the UK in the late 1970s and 1980s. Musically it was an amazing time: punk, New Romantic, new wave, ska, reggae, hip hop, and the second wave of British Heavy Metal was all happening. More importantly, this was all easily accessible: all these genres were readily available on Top of the Pops, Radios 1 and 2, and Radio Luxembourg.
The other thing is that I was exposed to a great diversity of styles as a kid. My dad is a Black American and my mom is Jamaican. We had a massive collection of LPs and 45s growing up. Lots of Motown/Tamla and Stax but also Johnny Cash, Rolling Stones, and Andy Williams. My aunt worked for the Jamaican Broadcasting Company in the early 70s and brought records from a guy that she had met in Kingston years earlier who was getting some attention back there. That guy? Bob Marley. So we had lots of early reggae, not just Marley but also Burning Spear and Peter Tosh. Also lots of what we call “jump up music” - calypso and carnival music. We didn’t have any racial lines in our music per se, and my dad was big into bands like War and the Isley Brothers who were heavily rock influenced.
So I was happily into all of this stuff, digging Earth Wind and Fire and Duran Duran with no ill effects until around middle school. We didn’t have Walkmans but the cool bus drivers would play tapes if we asked. You could play Michael Jackson and pretty much everyone would be cool with it, even the metal heads who would comment on Van Halen’s solo on Beat It. Other than that, there was a racial tinge to music - white kids were wanting metal and pop and Black kids R&B. The really out there kids wanted Afrika Bambataa, Whodini, and Malcolm McClaren.
One time I had a mixtape with The Police and a kid asked me why I liked white music. Like it was weird or wrong. So I was a little less open about my non Black tastes. It got really bad when we moved to America with a bunch of Black kids talking shit about my sister because she had a U2 patch on her jacket. (Her retort? An impassioned speech in the cafeteria about how U2 had two songs about MLK and most Black artists didn’t even mention him.)
Music was a big barrier to friendships with Black kids. I just didn’t like a lot of the overproducted New Jack Swing that was popular at the time, so there wasn’t bonding over the boombox. I hung with Asian and Latino new wavers who were into The Smiths and The Cure.
As a teen and young adult I went to tons of shows where I was the only or one of a handful of Blacks: Morrissey, Oasis, Sting… though there were more Black folks at the latter. Then Living Colour got huge and I saw them several times with tons of Black kids, but still in the minority.
I think there tends to be an orthodoxy of taste in music and fashion among poor to working class Black youth. It’s probably true among all racial/ethnic groups, but I got called weird by more Black kids because of my music tastes than any other group. When I went to college and the SES level of the Black kids went up, there were more “weird” kids listening to The Cure or even country. Even more so when I was in grad school. But there is still an expected familiarity with urban music among most Black folks I know… better know your Al Green or Run-DMC or Karyn White or folks will talk about you. 