Was going to comment that the ending of the TV series basically prevented the show from having long lasting cultural relevance. If it weren't for the current spin off, I think people would have forgotten about it completely.
Totally didn't think about blaming George RR Martin but you're totally right about that too.

How did this get approved? You'd think someone in the chain would say maybe a flyover for 9/11 is a bad idea.
This is on par with commemorating burn victims with a pyrotechnics show.