Portrait of grumpy old farang uncannily accurate

This cartoon mocks a “repulsive, fat, smelly, grumpy old farang wearing socks and sandals” chained to a go-go bar and proclaiming his hatred for Thailand.
Granted that his personal characteristics are somewhat unattractive (he’s bald and ugly, too) and his hatred is wildly misplaced, what’s wrong with wearing socks with sandals?
A repulsive, fat, smelly, grumpy old farang (bald and ugly, too) wearing socks with 
sandals who still loves Thailand