Having lived within walking distance, less than a handful of blocks away from LGA for the better half of the last decade, I've seen countless improvements to LGA over the past 3 years. It doesn't make sense to now close the airport after upgrading the terminals, adding new buildings, and adding the new ATC tower with the new radar antenna situated on top. Having flown from LGA on numerous occasions, I really don't see it being a 3rd world country airport at all. Is it shittier than JFK, yes, it doesn't have a gigantic mall in it like JFK does. But who goes to airports for the shopping? Or for the scenery?
I suggest people take a flight to a 3rd world airport and see the conditions there. I've been to HK Intl too (to the new airport, not the old one), and in comparison, JFK is far shittier than that airport. It's all relative.