It depends on what you want from the show I think. I agree with Asturias that Farnborough don't want the oiks to attend, even though as either tax payers of travelling public, we pay vast amounts to the 'boys club'.
My spotting days started in 1968 and things were certainly different then, as there seemed to be dozens of shows to choose from. The RAF would open up heaps of stations for their annual Battle of Britain at Home day in September. Now the only RAF show is at Cosford. However, this is interesting as there is the museum there, as well as hangers full of old RAF aircraft used to technical training.
Two years of COVID lock downs have made many of us wary of going out into large crowds, and, with fuel prices on the rise again, many will not be able to afford to travel far. We are never going to go back the the golden days of air shows. The best that we, the paying public, can do is to support the shows when we can and hope they keep going.
Yours cynically
B