I think it might be human nature, when people hear discounts everywhere they buy things that are not necessary ... and should when BTC drops or hears bad news don't easily panic and be provoked
This is the method that most producers use to attract consumers, from the wholesale price to retail price. The wholesale price is the actual price of the product while the retail price is just a number that is being created through their imagination, but this practices is really what we cant stop, sales happens everywhere to attract customer but the good thing about sales is that they are not imposing it on anyone, it is left for the person who saw the sales to fall for It or not.
For bitcoin, I sometimes love it when people panic because that is my own sales point, once the price drops, I take advantage of it to trade, so I dont encourage people not to panic sell.