MacDonald's is a global franchise. Perhaps where you write from the situation is appalling, but that location is not indicative of the world. I live in Japan and MacDonald's is thriving. Thriving.
Spotless.
Super super fast.
Painfully polite and cheery even when under staggering pressure. ( Lunch time in Shibuya, Shimokitazawa or Sancha, there are hundreds of orders. Literally three screens full and more waiting and yet they hammer cheerfully through.)
A scrap on the floor... never.
Actively employing new immigrants
Actively employing seniors.
Most importantly they have a new menu promotion item every three weeks. Sometimes it is seasonal others it is themed.
So, though I am sure the stories you tell are truthful they may be more indicative of the demographic than the country.
I still do a Mac D breakfast.
In any event as you say it is not super healthy.
Nice piece , keep at it.