thenammagazine
Super Freak
Sabre and Celtic aren't "known insiders" man. They're ordinary fans. All the info they get is readily available to anyone who has internet access.
The reality is, that guy (forget his name) had the same amount of credibility as Sabre and Celtic i.e. it's all rumor/speculation until the finished product is seen. Their opinion is no more believable or valid. Anyone can be wrong. We'll see.
I'd give more credit to established members of this forum who actually read a screenplay/shooting script, leaked or not, than a newb who is clueless as to how the film industry works and while he admittedly hasn't read it, already "knows" it's a fake.