I couldn't agree more.
Fishing boats need a destination, clammers don't. I have no problems whatsoever with a cleaned and sunk artificial reef.
I used to book wrecks and quite often the boat full of hunters and gatherers would convince the cap to redirect to a reefed vessel. No prob, a goodie bag full of incredibly delicious blue mussels, carefully picked, would more than assuage my minor disappointment.
Note to anyone interested: Gently free each shell without yanking the 'beard' out of the animal. Use shears to cut the threads holding it in place. They keep several days in the fridge if you don't tear them apart. If you are on a really good boat, the cap will drag them for you on the way back.
Important: You collect your catch in international waters. Problem is that you have to land them. Now, you can't prove that they weren't taken in US state-controlled waters. I have a recreational shellfish license. Get one at any of the bigger fishing stores. Don't throw it away, that number is yours forever. Show the shop your old one and you get a new one very quickly.
Recipe:
A bottle of cheap slightly acidic white wine, minced garlic to your taste, same for real butter. Check your mussels for those that are open, even slightly. If you can't convince it to close then it is dead and throw it out. As soon as your pot starts to boil, add mussels and stir until all are open. Throw away the ones that don't open, they are also dead.