It is an oddity, and one that implies that magically-capable folk like Ilyanna could straight up *learn* to have Jean Grey's powers, or that someone like Moondragon or Mantis or even Dr. freeking Druid could *teach* just about anyone to have her powers.
Heck, back in the day, Jean herself seemed to 'learn' telepathy from the Professor, being primarily a telekinetic...