There should still be corporate protection for him during the theater run and before international TV and streaming deals are finalized. With marketing budget of DC & Warner Bros a lot of mainstream media are going to shut up about him, or at least downplay his controversies.
But after that I think he is on his own, there is no way he is going to be the Flash again, even if he is going to have a Hollywood career after this is questionable.
Especially bad since its pathetic "competition" in theaters consists of OTHER turd films (God Is a Bullet, Transformers: part VII, The Fast and the Furious: Part 10, The Little Mermaid remake) that anyone with GOOD taste in films will ALSO avoid like the plague.
Michael Keaton returning as Batman for the first time in 30 years should CRUSH that kind of "competition", but... nope... Ezra Miller found a way to sabotage this movie BIG TIME!
They picked the time slot, probably thinking the only serious competition would be Indiana Jones, but that is about 2 weeks later, it should have made enough momentum to keep it going.
Now it is beaten by Spider-Verse animation, which has been going for 3 weeks.
You called it, now it is No.4, No Hard Feelings is now No.1, even it opened at just over 6 million, which is typical of a Jennifer Lawrence vehicle, no wonder she needed a break.
On the eighth day The Flash's number is 4.5 million, almost half of Black Adam's 8 million. If it continues like that the domestic box office of The Flash is unlikely to break 100 million, which is less the marvel multiverse movie Avengers: Endgame on the opening day (157 million).