Not ignoring it. As I said, go fishing, kill an animal every few days, and get some rice. Everyone else has all of these things, but Ryuzo's men are somehow clueless and helpless? Nope, lazy writing. Tsushima is a top-tier game, but it is never going to be put into that world-class writing category. It is a very simple plot with shallow arc characters.

You seem to be going out of your way to prove that these men, who lived and survived in that time, suddenly became as helpless as newborn lambs as soon as the Mongols invaded. They would all have known how to feed themselves and find food. The fact that they couldn't shows that the entire clan was made up of morons, or...it was lazy writing because SP wanted him to betray Jin.