I agree with you that the show had many problems. Which you probably have now seen me acknowledge in a post I made after the one you quoted. But yeah, I think the departure from canon on gender of the Dragon was the biggest problem, and pretty closely related to your "who is the Dragon" mystery issue.
And I think the departure from canon on gender of the Dragon was a much bigger problem than you are acknowledging. Let me explain it this way... As I've mentioned previously, reincarnation and the gendered magic system where one gender has been tainted is the BACKBONE of the story. The Dragon will be reborn as a man doomed to madness because of a taint his actions contributed to, and he will be both destroyer and savior as a result. It is a highly original concept in fantasy, and it is AWESOME.
BUT, the Red Ajah continue to hunt male channelers, even though much of the Aes Sedai (certainly Moiraine, Siuan, the rest of the Blues, likely the Greens and many more) know full damn well that they could be gentling the Dragon Reborn! That's a kickass concept!!! Which the show immediately proceeds to piss all over by, at best, making Moiraine a bumbling moron who didn't know the prophecy. At worst, it makes the Reds much more justified in their actions because, hey, if the Dragon comes back as a gurl no big deal. It undercuts the CENTRAL CONFLICT of the story.
Oh, and sorry, I'm never gonna buy the Covid excuse for the botched ending to the Season 1. Not after everything else they botched along the way. The terrible ending had absolutely nothing to do with not depicting Tarwin's Gap as a massive fight scene. People forget, the book only depicts Tarwin's Gap for less than a page, and mostly in the past tense. Rand shows up and vaporizes the army. That's it. They could have spent 10 seconds of CGI on that in the show. Instead, the show completely changes the entire Eye sequence so as to render it unrecognizable. Covid didn't cause Rand and Moiraine to walk alone into the Blight for a little monologuing with Ishamael.