Not really sure who this is even for. Most people who were excited for Harry Potter shit the first time round are in their 40s. The author has fallen into a rabbit-hole of right-wing nut-baggery. The movies did a decent job and weren't really that long ago. It's not like some 70s movie where everyone is clearly flying on strings.
It's the kind of thing I expect two seasons to be shat out on Netflix or Amazon or one of the ad funded services, and then everyone forgets about it and agrees not to do it again.
I just don't know what HBO are doing in this. I normally associate them with high quality shows and a streaming service that isn't available in the UK. It just doesn't feel like something they'd be doing. Maybe they've just fallen that far.