Iol - I think fans just trashed everyone. Garrett, Jerry, Stephen, Linehan .... it actually seems more are on board with him as OC.
Here's the best I can figure.
(1) The anti-Garrett legion is smart enough to realize that this season's offense might just improve in a big way.
(2) If it does, they need to have well-entrenched this narrative that Kellen Moore is responsible; otherwise, that Jason Devil Garrett might end up with credit, and we sure as hell can't have that.
Fortunately, it's a relatively easy narrative to sell since most fans are casual fans, and casual fans don't actually pay that much attention to, for instance, all of the quotes from Jerry, Stephen and Jason even before Moore was eventually anointed that affirmed a change from an offensive
director system to an offensive
coordinator system. It's just a few pesky serious fans who (a) did (pay attention) and (b) who aren't rabid anti-Garrett legionnaires and (c) who will bother to throw a flag into a thread when the preferred uninformed narrative is being regurgitated.
(3) If it doesn't, Kellen Moore was dispensable anyway and it can all be attributed to another idiot Garrett decision and/or a puppet Garrett decision, but regardless, just another reason to demonize Jason Garrett.