I 100% agree that this is the law in Massachusetts.

You and I might know the laws, but what about someone traveling from another country who wants to use OSM to plan a bike route? Just because we may not find certain data useful doesn't mean it shouldn't be added.

What I’ve learned over my time mapping is that the richer the data, the better. There are some great projects out there that use this data. Personally, I love https://pianos.pub/. I don’t play piano, but someone made a website where you can enter your address, and it shows you the nearest public piano.