If it was so incredibly easy, schools like Alabama, Florida, FSU, Texas and SC wouldn't go DECADES between runs. They are all huge state schools with huge and dedicated alumni/donor bases. Ohio State has had a run of success, throughout multiple coaches that they hit on. They've managed to not hire a mediocre coach for the better part of 4 decades. The last "Mediocre" coach they had was Earle Bruce. Earle Bruce last coached in Columbus in the late 80s. In other words, there are people in their early to mid 30s that have not known anything other than Ohio State having high end head coaches. That's insane, especially knowing that they have had MULTIPLE coaches in that span. Most programs that have a run like that, usually have one coach that stays forever, ala FSU or Penn State.
That said, all it takes is one or two stupid hires and you'll be in the wilderness. I'm not shocked that there are some spoiled OSU fans out there, they haven't experienced failure on a massive scale, especially those under the age of 50 or so. They literally went from Woody Hayes, to Bruce, and then to this run of solid, HOF level coaches.