People moan because it’s empty corporate misdirection that misplaces and deflects blame from the actual problem. More than half the plastic in the sea is industrial fishing refuse but sure, the straw in your smoothie is the problem.
If we just finger point nothing gets done. Yes, industrial fishing destroys the oceans in more ways that one, but that is a global problem, and global consensus on anything is in short supply at the moment.
Probably the best thing to do in the case of fishing waste is to stop eating fish (or pick the source very carefully). That might be an inconvenience as well though...