Man of Steel I think was liked enough by most people (it was not a total disaster with critics, but also not great and it wasn't hated like BvS upon release). But, BvS (though I liked the UC of it) and JL are dumpster fires (I am ignoring SS cause it had no main JL members outside of cameos). I think the DCEU cannot be killed altogether right now. People loved Wonder Woman and Aquaman is yet to come out (maybe it will shock us, who knows...I do like James Wan). But, it's on life support. I think if WW was poorly received, it just would have died and been over now. Wonder Woman 2 will happen. Suicide Squad 2 likely happens (lest we forget, that made money). But, I can see the connective tissue of the shared universe being minimized. Also, I don't see fringe characters like Black Adam getting movies in the end. Heck, we shall see if Shazam actually goes behind cameras at this point. I am not sure we get a JL2 anytime soon, and any hopes at a MoS2 may sadly be dead
I want the DCEU to succeed and keep going. I just don't know how long it can last or how many chances WB will take given what happened with Justice League. That one hurt.