All due respect to Hacker, but I think the clues provided by more long term sources are pointing towards certain ish for us.
Also I saw someone on Twitter openly say cuts haven't been made yet in response to Hacker's ish about lots of black walls on the Hollywood side.
I don't wanna cast doubt on any one person, but we're still in the early goings of spec, not one house announced yet. There's a lot of smokescreen and different "ideas" popping up.
Just going off last year, I don't see anyway we do HDD and Blumhouse as separate mazes.