Yes, I watched it on Friday on HBO myself. I enjoyed the movie and understood it as someone who read comic books etc, their whole life. But I absolutely understand a lot of people's criticisms about the writing and the overall baffling nature of it.

It's a common enough comic trope that it's not a mystery why so many people are post rationalizing it into the movie. Where it really wasn't. The whole origin story are bit was just confusing too. They didn't even do that for the Superman movie before this. They figured everyone knew it and just went with the character.

It was a well done sequence and overall enjoyable, but it's necessity and placement was just confusing. As it didn't really explain or justify directly any of the things that were going on. Or even tie in to the previous Superman movie. It would have been the perfect point to flashback to an inciting event that sent Supergirl on this path. Not as perfect as just opening with it and not confused drop in mid drunken bender.