Not sure if it makes sense for EK to create a dedicated F lounge that is going to lie vacant for most of the time and at most 14 people get to use it 3 hours in the morning and another 14 for 3 hours in the evening. Maybe when they have 5-6 daily services to JFK, it might.

As I said before, EKs JFK lounge is much better than the F lounges of quite a few other airlines. Rather than thinking about whether F passengers deserve more, maybe its more like J passengers are 'getting more than they deserve'. But that's a good thing except that it may make F pax quite jealous.