On behalf of everyone else in the world, please invest in headphones.
Broadcasting in this way is boorish and the kind of thing emotionally stunted people do to inflict their will upon others. I'm not saying you're necessarily like that, but you're 'wearing their uniform' so to speak.
I have a OneWheel that I use to get around, and a JBL speaker. I legit listen to music in Publix isles, dancing, vibing, all day, every day.
I'm known around my neighborhood as "the speaker guy".
If I don't have music playing, I'm usually finger drumming/tapping/bobbing my head anyway.