I saw some people comment on a thread similar to this yesterday called, "Sailor says pacific is lifeless form Japan onwards for 3k Miles". I am guessing it is the same gentleman in this article and this is the full article. Some comments there were skeptical and suggested they had been at sea and hadn't caught anything or had not "seen any whales or dolphins". Let me say that there are countless counter arguments but…
In addition to commonly exaggerating problems, some people lie to further an agenda. Maybe an employee thinks their nephew deserves a shot at developing the company website so they become hypercritical of everything you do. Or maybe a sailor with subjective memories just doesn't like what fishing boats are doing.
In any case, anecdotal reports should be taken as a call for further study, not as a call to draw conclusions.