I think Gresham's Law has been showing us the exact opposite point with cryptocurrencies as a whole - cryptocurrencies are the "bad money" with no inherent value, i.e. no use case yet other than speculation, so people have been trading them away for "good money" (fiat), leading most cryptocurrencies on a long term trend towards zero. The only thing propping up Bitcoin is its pyramid scheme design (disproportionately rewarding early adopters and requiring them to constantly seek new scheme members to counteract its deflationary nature), so the small number of people with almost all the wealth are massively incentivised to protect their wealth by investing in pro-crypto projects, pro-crypto press etc. to convince as many people as possible that it is the "the future of money", "the best money that has ever existed", etc.