The Vegan thing is your straw man. So is the rest of your post.
Look, it is simple. Manage the resources. Overfishing/underfishing/overregulation/underregulation whether it is forrest land, tuna stocks, crab, ranching, etc. causes problems.
Perhaps you want unregulated fishing of American waters by third world countries. Perhaps you don't care if whale populations crash. Perhaps you don't care about tuna or fresh water fish either. If so, well, what can I say?
The post said a pox on both their houses. How you twist it from there, is your choice.
ping