The current regime is indicating that DCEU's been saved from the trash bin by Diana, Arthur and Harley with them slating it out farther now than it had been before the SNYDER CRISIS, they as usual think Superman is the problem. (And not, you know, spending $500 million on and wanting to start over a film you set a hard release date on. After you did almost the same thing budget wise on the prior film.) The actual always problem with the DCEU "canon" was that they never actually established anyone to oversee it until after Justice League was already in production, Snyder was just expanding to the team out of what he wanted to do and Warners assumed they could do a bunch of spin-offs off his team-up films. Only they never planned any of that out, but all the films are still tied to BvS directly. (Nothing from JL except Bruce contacting everyone and forming a team needs to be referenced again and Aquaman just sorta vaguely mentions events.) Johns wasn't brought in and then dismissed for that DC Films "plan" until they had already told Snyder to keep going and slated all the spin-offs with the understanding that they'd be tied to and occur (canon-wise) after Snyder's Justice League films. Since nothing happened in JL of any consequence for the other characters and The Batman films are set in the past, that plan hasn't been bothered.
I doubt Warners wants to cross the two streams after seeing Marvel fuck it up so bad*. Especially since Arrow is supposed to be ending in part so Berlanti can keep the universe expanding without everything having to be tied back to it.
*Aside from the failed productions, Marvel chose not to tell the showrunners of Agents of SHIELD that the universe was jumping ahead five years, they apparently learned it like everyone else from Endgame. After the show was already airing episodes post-snap.
