Are cryptocurrencies based on the greater fool theory?

Are cryptocurrencies, these digital assets that have gained immense popularity in recent years, inherently rooted in the controversial concept of the greater fool theory? This theory postulates that market prices are determined by the willingness of investors to pay more for an asset than its intrinsic value, with the belief that there will always be a "greater fool" willing to pay an even higher price in the future. Given the volatile nature of cryptocurrencies and their market dynamics, does this theory play a pivotal role in shaping their valuations? Are investors primarily driven by the speculative mindset of finding that next "greater fool," rather than by sound financial analysis or the intrinsic value of the cryptocurrency itself?