Naive? No. But who you should really be upset with is Disney and it's techs for not fixing this glitch. If it's meant to be there, then fine, let everyone know why it is so the playing field is level. If it's not meant to be there, close it so we don't have DISers like you upset or angry about a glitch being used. When this thread first started, it was originally just to ask why someone was able to make their FPs before 60 days. And well...you see what has happened 21 pages later. I'm not sure it will help you as the SDD FP was something you really wanted. (And guess what, you can STILL get it if you continue to check closer to your trip. I've read plenty have gotten it day of, which is surprising) Visit the website link I'm leaving you and look at the headliner rides and the FPs available. I'm telling you if this "glitch" was as bad as you think it is Mine Train, Test Track, Soarin, and Frozen Ever After wouldn't look the way they do.
https://www.thedibb.co.uk/forums/fastpass_plus_availability.php