Well, the Flash had a back story and one that made him turn out to be not the sniveling coward that he was in the first cut.
And it didn't end with that horrible over-dramatic race between Superman and Batman to save more people.
And it had more of a plot.
So, in the end it's jut a much better movie than the steaming pile that was released...
... but you're not supposed to like it because Twitter, Hollywood, the left in general and the media that supports it have all come to the conclusion that fans are evil for being fan. And making a movie that the fans want makes you evil. And the goal is to make movies the fans don't want to see, lose money on it, get praise by critics and lots of Twitter Twits, and then blame the fans for not watching a movie that you didn't make for the fans and made widely announced that you didn't make it.
But the fans demanded this, they wanted to see it, the demand caused the studio to release it, and when they did the fans came out to watch it and liked it.
So, despite it being far better than the original (and far too long) you are supposed to hate it because of politics... even though there are no politics in the plot.
And then there is the fact that it the first release only sucked because of heavy studio interference, and so you can't celebrate as a studio being smart enough to go back and make it better for the franchise, you have to condemn it because the studio can't overcome, because that would be admitting a mistake.
You have to hate it, even thought it was pretty good and fantastic compared to the first attempt.
So. I don't know, I just think the salvaging that train wreck and proving it can be something watchable is pretty impressive.