J.K. Rowling controls all of it and is not going to let anyone else come play with her toys.

That comment is just dripping with spite. These people are obsessed with corrupting good IP for modern audiences.

he did not like the idea of a rigorous adaptation of J.K. Rowling’s books despite admitting that it would be successful.

And he flat out admits that he doesn't want the project to succeed. And he ought to be smart enough to know that his way has resulted in massive commercial failures in the TV and games domains.

He just wants to destroy what was good and push a political message.

Coincidentally I'm rewatching the old Harry Potter movies. While I don't like how some coincidences and epic timings just happened to move the plot along, I do miss when movies were very satisfying to watch.