Its always something to do with the halving mechanism so far but this time it seems to be different ( my own perspective ). I wonder if we will ever get this huge bull run if it wasnt for the covid-19 pandemic. The 10 years US treasury bonds hits below their average return which is why alot of those big guys 'gamble' into cryptocurrencies in general
To me, it's only stock to flow.
Yes, the demand driven by the pandemic, the FED brrr and the wealth effect of stick market played a role, but the main driving force hasn't changed since 2010: Stock2Flow explains 95% of the price of bitcoin: I wouldn't be too concerned by the residual 5%.