Exactly! The originally quoted post was about not being surprised that Pagans adopted Christmas, because it is steeped in Pagan origin.
Isn't it interesting that the first Christmas wasn't celebrated until several CENTURIES after Jesus died, and there is no indication that he ever celebrated his birthday. In fact, the only birthdays mentioned in the Bible didn't end too well (John's head on a platter) and were in no way associated with Christianity. Jesus did tell his followers to remember him by Observing the Memorial of his death, which hasn't caught on nearly as well as Christmas. Must be the present thing!!