To be fair, GP compared the LLM hype with crypto... And as niche crypto may be in the future, I don't think it will also "peter out without leaving a major impact on society"...
Crypto will not be niche in the future. Bitcoin has a market cap of 1,349,125,982,176 (https://coinmarketcap.com/currencies/bitcoin/) and recently surpassed the market cap of gold itself and has large investors from Black Rock to Apple, ans recently got approved for ETFs which means the general population's 401k's will have bitcoin in them starting this year. Other crypto currencies may die out, but bitcoin is here permanantly.
If you haven't yet, buy some bitcoin and stop letting the government steal your hard earned money through inflation.