I can sympathise with the problems of a community based on a single industry when that industry collapses. There have been many examples over the past hundred years.
But from first hand knowledge of a fishing town, I empathise less with fisherfolk.
They frequently refer to 'farming' or 'harvesting' the sea, comparing themselves with agricultural workers. When did a fisherman ever breed a fish? When did he ever cultivate the sea?
They do not farm the sea, they rob it. They have robbed it, worldwide to the extent that they have fished the fishing grounds and their own livelihoods to extinction.
The planet is too small, the population is too large for the hunter gatherer mentality of 'strip the area and move on to the next' to be sustainable once industrial scale extraction is involved.
When the whole earth is bare, where do we move to?
No, I can't completely sympathise with Fishermen.
It's a good song though.
Cheers
Dave