It has little to do with being a bitcoiner though. You could actually even argue that it's the same exact emotion at play, greed - wherewas before you were greedy for the best deal to save the most money, now you're greedy because you "know" Bitcoin will go up against fiat shitcoins in the future; in either case, you want more for less.
Actually, Black Friday was always irrelevant, and greed is still the same force behind all that materialistic onsumerism.
Bitcoin or no bitcoin.