Don't know if I'd call him the star, but Morrison stated several times that he was his favorite X Man. I remember a whole bunch more than a few Cyclops fans who disliked it Not necessarily saying the majorit, though . Myself, I hated it enough to drop the X books and Scott had been my favorite X Man since I started reading. It was related to Jean, but not directly the reason. It was what I thought the affair did to the integrity of the character. There were a couple other things Morrison had him do that I didn't care for either. I did like his depiction in the arc with Cassandra, as Xavier, on the Shiar ship.
One thing. I don't confuse my feelings for Morrison's X Men run with how I think the majority felt. As the issues came out, across multiple forums, I have little doubt that the clear majority of people posting liked it. However, the people who didn't like it tended to REALLY dislike it. What matters is sales And while it was the top selling X book his sales dropped off a lot. A lot more than someone with that name's sales should have dropped off. They went way back up for his last arc. I attributed that to Silvestri coming back Whedon lost sales too. Not like that. He stabalized as a lot higher number. Anecdotally, I figured it was a combination of 2 things. Morrison brought on new readers because he was Grant Morrison. Yet might have driven off some long time readers. Not just Jott. It's not like that was the only controversial thing he did
Bottom line, like it or not, a whole lot of people did like it. Some of them comics creators who wound up on the X books.