It's a clear message by HBO to the American viewers of the end of this era, the era of greed and barbarism, politics and cars. It also carries the evangelic meaning of forgiveness, marriage, corn and misinterpretation.
In the Polish calendar, the day when the final episode aired was known as the day of "the Hog" (animal that clearly resembles Tony), which celebrates the dead ones and it's when locals eat "Pierscienie Smazonymi Cebuli", a sort of dish similar to onion rings.
The elder of the family has to eat a total of 86 cebulis (just like the total number of episodes in the series) in not less than 58 minutes (like the airing time of Made In America), to prevent the dead ones to rise and haunt the living.
For all of you who are still skeptical about this: if you read "Members Only" backwards, (the jacket worn by the possible hit man was a members only jacket), you'll be amazed: Ynlo Srebemem means The Fat Guy Will Get Shot in Kurdish.
Enough?