Don't tell me, very ridiculous, but used to seeing writers nerf their powers...
I don't know why it doesn't surprise me to know that it was Claremont who wrote this moment, although it's from another universe, it's kind of disappointing coming from him, like when he made Thor beat Storm with a kiss, but anyway, it happened.
Yea! I think this limitation because of the nervous system is more conducive to characters like Magneto, Polaris... But not Storm, who should have immunity to their powers, but I think it was a move to put their feet on the ground, setting limits / weaknesses to not be the most powerful of the team, it has always been like that .. I hope it changes.
I'm having the same thoughts as you, on this I really hope you're right, Storm wasn't meant to be in the second or third place, not now, with her new status, or being a story tool.