While it's true that for every BTC bought, someone sells it, the demand for Bitcoin can come from many sources, not just the readers of this post. For example, institutional investors, corporations, and even governments have been increasingly interested in Bitcoin as a store of value and a hedge against inflation.
Moreover, not all Bitcoin holders are whales who bought at much lower prices. Many retail investors have also bought Bitcoin recently, and they may be more willing to hold on to their investment for the long term, even if the price fluctuates in the short term.
As for the concern about miners shutting down if there are no transactions, it's worth noting that mining Bitcoin is not the only way for miners to make money. Some miners also provide services like hosting and consulting, or they may switch to mining other cryptocurrencies that are more profitable at the time.
Finally, while it's true that people who hold Bitcoin for years still need to pay daily expenses, they can always choose to sell a small portion of their holdings to cover those expenses, rather than selling all of it at once when the price is low. This strategy, known as dollar-cost averaging, can help investors avoid the temptation to panic-sell during market downturns.