The amount of seafood the pros keep may be less than what rec fishers keep, I don't know, but the amount of marine life the pros kill and damage far exceeds that of us recs. Prawn trawlers for example, their nets catch nearly everything in their path, prawns, all sorts of fish, turtles, rays, etc and they only keep the prawns, the rest is thrown back dead, wasted.
I won't align with the pros.