Because Lantern's Might (the grab) is obnoxious. Don't get me wrong you can deal with the ability well enough, but it doesn't change the fact that it is obnoxious.
For a combo starter that requires no aiming, is only 10 frames, and has such a massive range and is even tricky to punish in many cases. At high level play it's not that great but at mid to low level play it's just such an easy skill to use that it becomes obnoxious.
The most ironic part is that the rest of his kit is actually kind of mediocre as the ability is too strong it required sacrifices in other areas.
I honestly think that he should have might nerfed somehow (make it more punishable, or slower start-up, BUT, that he should get considerable buffs elsewhere to compensate.