If one doesn’t understand something, there has never been a time when there were more readily available resources to explain it. If you don’t have time or want to put the effort in to understand it, it is perfectly reasonable to just accept the consensus opinion of people who are experts in that subject. We all have to do that to some extent. The world is too complex to understand everything. Still, this is just incoherent. Not even wrong.

Christmas trees predate Christmas.