The fishermen can no longer afford or acquire fuel for their boats to go out and catch the fish. Due to the non fish related economic disaster outlined in the article.
And in some very poor locations people do fish by sail and rowing, but even in some of the lowest income countries on earth, using small petrol engines is increasingly common (source: buying local seafood in Sierra Leone some years back).
> using small petrol engines is increasingly common (source: buying local seafood
Right, because the locals have changed from fishing for themselves to fishing for others. This is market economy dynamics of engaging in activity that produces the most money.
At least where I was buying fish it was all for domestic consumption in the Freetown metro area. Very little or none of it was being caught to be frozen or canned.
You also don’t need fuel to go to work, commuting is a modern activity. With COVID and the increase in fuel prices, we should /all/ work from home and let civilisation crumble.
Fishing is not a modern activity. Rafts existed long before people rode horses.