It’s pretty objectively inconsiderate of others to make unnecessary noise like that on public transit or even too loud for personal use in public spaces.

"Inconsiderate" is in the eye of the beholder, it isn't objective at all. Maybe some spaces need a dialogue to go down to redefine the social contract. I can accept that.

I have a personal fondness for a really loud vibe that you many not like. Which may even be harmful to you. If anyone on a specific train or bus is specifically being harmed tho, I would support turning the music down or off! I'm not a complete asshole, I was just raised on loud music.