The size of the island isn’t the real issue if you’re staying home. In this case even in a larger, more sparsely populated area the effects of cabin fever will set in as per this image https://www.facebook.com/photo.php?fbid=10222604429965804&set=gm.1135905580075283&type=3
I take your point, but 99% of this population are used to crowded gatherings and busy living - some even crave it for some mysterious reason!