Thanks for making me aware of this. I agree that Lorna can be more playful and artistic with her uses while Magneto can be more pragmatic.
To me, it's damning that Marvel will have Jean fight Cassandra on Genosha, but they've refused to acknowledge Lorna was even on Genosha and went through anything there for the past 10 years. The only time it's come up in the past 10 years was for a cover released end of last year that included a nod to it, which I gave props to Marvel for at the time, but in retrospect I wonder if it was really just a case of an artist wanting to do it and Marvel not going out of the way to quash it.
I don't think his issue is with Lorna fans, but with Lorna herself. I think he sees her as a worthless character, that she somehow "lessens" Magneto and Wanda. Aside from his actions, his past comments include trying to justify an overly complicated excuse for why Lorna "couldn't" be Magneto's daughter (but Siryn could by Banshee's), and telling someone who wanted Lorna in Avengers vs X-Men that events are "only for A-listers and B-listers." Ultimately, I think he is currently the prime example of someone currently working at Marvel who has a mistaken negative impression of Lorna thanks to how poorly she was treated in their formative years of getting to know the Marvel universe.
Exiles version Lorna is younger, but she's the prime example I cite to people of how fun and cool Lorna can be, and how great the Lorna and Wanda sister relationship can be if handled well. And honestly, I'm a bit raw that it got abruptly canceled when there was much more that could've been done with it. I had just discovered Lorna and started getting into her, and one of my first experiences right out the gate was "Let's cancel this book that's doing great things with her."