Completely bass ackwards logic there. If they really think they have a chance at the CFP they're not going to be scared of any FCS team.
The more plausible explanation is if they think they have a chance at the CFP they'll buy out NDSU because they think it'll hurt their SOS. Of course that doesn't make much sense either because NDSU is better than the majority of G5 teams they could get but it's an excuse the ignorant masses could get behind. They also play Ohio St the week after so if they're really CFP material they'll start 2-0 with a good win and a fantastic win. I'll let you figure out which is which.