So far the universe is nonexistent. So it’s not true to say it’s been really good. But to your point, they certainly haven’t “fucked everything up”, since they haven’t released anything yet.
But yes, The Suicide Squad was great, and I’m excited to see what the same director will do.
Blue Beetle is the first DCU character, but I don’t believe the movie is canon since it’s not the first DCU movie.
I'm no tax expert, but it's my understanding that they cut off all the things they did because it was essentially free money back from the buy out. If they make a show/movie themselves and then axe it, I figure the best they could do is break even.