This may spark an interesting debate.
I get what you're saying and I wouldn't want people on the beach blasting their music either. If someone's blasting music in a public place, I want it to be me. But the bigger question is...do you listen to music at the beach? Are you one of those that likes music at the beach or you'd rather listen to the sounds of nature - the waves, the seagulls, the wind, etc. Same for when I'm kayaking the river. Sometimes I'll have my bluetooth speaker on my boat but other times, I absolutely don't want music and I'll actually get irritated with other kayakers coming down the river with music. Where do you stand on this important issue?