To make it simple : Grant Morrison wrote a great Jean. She was not perfect, she had flaws, she had a temper, she had compassion, and she was embracing her powers.
So far, Hickman hasn't shown much knowledge or understanding of the character. His Jean is not horrible. But she's not great either.
Now, I am not in his head. So I really can't tell if he's trolling, making fun, or hating the character (and the fanbase). And honestly, I shouldn't care as long as he remains professional and talented in the books. The franchise so far is very good. At least better than it was for more than a decade. So yes, I have decided to trust his intelligence, and I have decided to believe that he (and B.Percy) has great plans for Jean. Again, it is a decision I have made to be faithful. Then, only time will tell.