ok, I have a rambly idea I thought about recently which might be part of this.
there is this idea called the sieve of time, basically a lot of things happen at any time and only a few stick around. generally there are some things that stick around better than others. a good example would be roman architecture, the really good bits stay around like the collosseum or the pantheon or hadrians wall but the slums disappear.
This also applies for music, we only remember a small fraction of what comes out, and what seemed big at the time might not be the thing that lasts.
I have a feeling that sappy romance stuff is really popular as its released but has utterly terrible staying power, it gets lost in the sieve.
Really good example, 1969. This was the year 'fortunate son' was released. that peaked at 3rd in the US billboard top 100.
you know what did hit #1 that same year. this:
apologies to your ears folks, this sat at #1 for four weeks that year. But i would say if you asked people now, this song is certainly less well remembered.
ok thats one example but i think i have something that illustrates it better. the rolling stone top 500 songs of all time.
https://www.rollingstone.com/music/music-lists/500-greatest-songs-of-all-time-151127/marvin-gaye-whats-going-on-37363/
looking at the top 10 i see 2 that i would call romantic, plus one that is about a breakup. The whole list has a fairly small number of romantic songs compared to what you might expect.
So if most aros here are fairly young, you are probably somewhat aware of new releases and seeing a constant wave of romance being fired at you. But as you get older, the things you listen to and remeber move away from the romantic songs that struggle to stick around whereas things that are interesting, or strike a chord politically or socially stick around.
So maybe a lot of allos, especially as they get older, don't see most music being about romance because after a few decades of sieving there is a lot less glurge and a lot more diverse topics and themes.
also, have a palate cleanser:
edit: I should probably add, rolling stone's top 500 is a list made by other musicians, so it is a bit music snobby and is not quite a list which would reflect what most people would think would make the list, but it isn't a bad list and I suspect my idea about romance her ewould stand up ok in other lists too.