I guess it all depends what the Snyderverse means to each of us. For some it means 1:1 what Zack had planned, and anything else is not OK.
I think it's pretty clear the 1:1 realisation, even with the modified "non-released" plan Zack had, won't be a reality. Coorporations don't want to be held ransom to the fans. It's a fine line I guess from keeping them happy and letting them have too much to say.
In any case, I'm in line with your thinking though that WB will do their own thing, however stay within the boundaries of what was setup before. For me that's still Snyderverse allbeit not ideal 100% Snyderverse.
What's NOT Snyderverse however is whatever the previous regime had planned. i.e a re-boot using the Flash film to bring Batgirl, Supergirl and Keaton in to replace Cavill & Affleck.
I can understand losing some hope, but I think we'll end up with some good content going forward. Affleck also wanted creative input to his films, and given his experience and star power, they'll give that to him (especially if Cavill got it). Sure Mikey Sutton could be making it all up, but time will tell I guess.
At least Gunn is pretty vocal and transparent on social media. He showed that Lobo pic which seemed pretty quick considering he's only been there for a short time. I also think he understands the power of informing people of the slate going forward (ala MCU), so I wouldn't be surprised if we get some more announcements going forward once they get a clearer plan.
So until then I guess it's a waiting game.
However should the next few released details look crappy I'll be right there with you Alatar, losing faith quickly !