I couldn't hear the guy standing 10 feet away from me, who was
yelling about why these dumb boats aren't illegal.

I don't think they should be illegal but I do think the folks who own them have
a responsibility to use them in places where they don't unnecessarily bother
people. These are really offshore race boats, take them offshore and enjoy!
Like most things, if people don't use self dicipline the government will step
in and impose law.
My favorite example is the SCUBA industry. In the 60s they took it upon
themselves to regulate themselves and almost a half century later, in a time
where the government has it's big nose in everything remotely dangerous, SCUBA
is still pretty much self regulated.