If you think Shepard Smith is capable of suppressing turnout, then I strongly disagree. I can't think of anyone who takes Shepard Smith seriously.
I would believe the idea of Shepard Smith wanting to create a false rumor to attract attention to himself.
But the reason I find it interesting is that Kasich is still spending time and money campaigning. He has literally zero chance of winning or even being considered. He is not even eligible under Rule 40. But people are giving him money to stay in the race and he is spending time campaigning.
There is no logical reason for him to keep campaigning.
Unless he has been told he has a chance at a brokered convention.
Capable, perhaps, perhaps not, regardless, part of a disinfo campaign.