I think you're barking up the wrong tree here - why would anyone invent an email such as this? I believe its authencity, but that is not my 'problem' here.
This might be a weird take on this, but my main problem is that I even have to consider this a problem... I totally get why this supposed letter comes off as controversial, but I just hate the fact that this is a matter I, an average film enthusiast, have to even be aware of and am invited to judge it. Because as soon as it is put on twitter, the person sharing it is kind of presenting it to the widest audience possible, on the most generic platform possible. This isn't a film magazine, or a business insider newspaper, this is just... twitter, and I'm not sure if it's fair to just put it out. Because I don't feel I have the proper overview to judge it fairly - and I don't even think I, a moviegoer, have to judge it. But a lot of times these days, especially on twitter, I am faced with certain issues that I am encouraged to judge even if it doesn't concern me that much.
I totally understand why this is problematic for journalists and for the studio exec who wrote this, but how is this not a totally confident insider issue? Alright, the whole thing concerns journalist who will report on the film for the general audiences (such as myself), but... and I might have to re-read the whole thing, but wasn't this whole letter a mere "lecture"? That is the harshest thing I can say about it, because I don't see any sort of threat made against these journalists. But please point it out if I missed anything. So this is an off-the record letter from a business (studio) to those working as part of the business (film journalists) and now I feel I have to have an opinion on this for some reason...
I don't know, I'm probably wrong, but I just wanted to try to express my thoughts on this.