Lots of hate, I thought it was pretty good
This genre has been bad of late. Marvel started out good and turned to crap. DC has always been crap. Aquaman and the 1st WW were the only DC movies worth anything. I found this movie to be pretty enjoyable, tho. One of DC's better movies. It was cheesy at times, but acceptable. It was good seeing Keaton revise his role. He was pimp in the Russian scene.
But this Multiverse stuff is already old. I think this genre has over-stayed it's welcome and has gotten old. I doubt it can be fixed. I'm sure both DC and Marvel will reboot all characters and go at it again, and again, and again. Ugh.