It doesn't matter if the excuse is plausible. People who want to show their loyalty can do it by claiming to believe the unbelievable thing.
Conservatism consists of exactly one proposition, to wit: There must be in-groups whom the law protects but does not bind, alongside out-groups whom the law binds but does not protect. -- Frank Wilhoit
By claiming to believe the lie, you also lay a claim to being part of the in-group so the rules (like telling the truth about things) don't apply to you. Of course, the truth is that 99.9% of the people who think of themselves as part of the in-group were never part of it, and will eventually be treated the same as the people who they're trying to trample on.
Part of that attitude was that Gen X never had power. The Boomers have been clinging onto power since Gen X was in high school. Gen X could have fought for power, but would it really have changed anything?