As you said, I wonder what the paint manufacturers will do with this. "Don't clean your bottom" is rather naive; even with fresh paint, the bottom gets fouled in a few weeks; it would be pretty bad left uncleaned for a few months. Perhaps they will claim that copper paints aren't so bad (because none of the alternatives work, or are too expensive), so long as it isn't cleaned...thereby avoiding the retooling and expense of finding alternatives.
Regardless, thank you for posting it.
What gets me - which I mentioned when they tried to ban copper-based paints a year or so ago - is the the focus is on recreational craft. I look at those big container ships in SF Bay - each one polluting hundreds of times more that the recreational boats. .