Just makes it easier to dismiss them as offensive relics of an oppressive white supremacist patriarchy. No-one under 40 is going to miss what they don't want to know about.
Are you hopeful that all books written more than 40 years ago are purged too?
Not at all; My comment was entirely facetious. I'm opposed to destroying the past to appease the present. That's why I scour used bookstores for older copies of challenged books. I've had to add Roald Dahl recently, but someone has to remember the past.