There's nothing bogus about Columbus Day, we've got the exact date nailed down with as close to certainty as history permits and its a totally straight-forward and non-borrowed holiday about one of the most significant events of human history, it's probably one of the most genuine holidays we have. You don't necessarily have to like the guy to acknowledge the importance of the day. From a national perspective, as opposed to religious, its hard for me to think of many days more significant to any American country, except a country's Independence Day.

But whether you like the holiday or not, there's absolutely no doubt about it's originality, purpose, time, etc. It's not some mutated, annexed, or borrowed holiday, it's date is not in doubt, and there's no dissent about what is being celebrated, it's one of the older popular holidays that can be said about since most of the other old ones slapped new names on existing holidays, shifted the purpose to a more modern/convenient one, or celebrate on a day that is loosely at best and arbitrarily at worst connected to the day it allegedly signifies. On the bogus-ness scale, it definitely isn't invented or hyped up by Hallmark or distorted for commercial sales.