I watched it last night. Let me preface by saying I have a soft spot for disaster movies with bad science. I like Armageddon and Deep Impact and Day After Tomorrow. Wandering Earth was just barely tolerable, but I even derived enjoyment from San Andreas.
But Moonfall was criminally bad, even for me who expected (and even wanted) the bad. No part of the plot made any sense. What I think was supposed to be the big reveal was entirely underwhelming, even with all the flashy CG that came with it. There was an entire subplot with a group of characters trying to escape disaster that was so transparently done to fill up time, as they didn’t affect the overall story in the slightest. Like not even a little bit.
Don’t even get me started on the “science”. In most disaster movies, there is at least a modicum of attempt to make it to sound plausible. But not this one. Sometimes you get “science” covered up in technobabble, but they didn’t even attempt that here. The writers simply didn’t care. They just wanted their cool scenes (which admittedly there were a couple).
There are the good bad movies where you can have fun, and you get the sense the actors / actresses are in on it and are having fun too. Moonfall was not one of those movies. It was a bad bad movie.