I like hearing peoples music. Enjoy from their phones, cars, and especially those who mount a stereo to their bikes or backpacks. Thats cool.
And I don't mind other stuff, as long as it isn't really shitty (regressive, hateful etc). Once a guy was watching some anti vax conspiracy so I felt invited to correct the youtube. IMHO by playing something like that in public you are soliciting some amount of conversation. Maybe he was hoping to make an IRL friend to go down the rabbit hole with. Which is a healthy impulse even though I disagree with the content specifically.
I think it's perfectly social to share auditory space with those around you. There is no call for silence. Its not like anybody's phone is extremely loud.
Personally I would be completely humiliated if anyone could overhear my podcasts and other stupid shit. You couldn't catch me playing anything on speaker on the bus, I'd rather die.
old lady