It wasn't reason #1.
Try doing a file search for "gipsy moth" in the FSX section. I got the message for FSX Gipsy Moths N1510V, G-AAVJ, NC917M, and NC919DH. Then I stopped. Screengrabs zipped as attachment.
So links off this forum do not appear to be working as you think, at least from this side of the pond. I'm sure we'll get there in the end, but that may be a bit further down the road. Have there been mass file removals by authors?
Fsim_fails.zip