If you go that route, you could just as easily say BTC is inextricably linked to the S&P500.
Correlations, based on daily returns, through April 11, 2023:
Past 5 years:
Correlation(BTC,NDX) = 0.30
Correlation(BTC,SPY) = 0.29
Correlation(NDX,SPY) = 0.93
Past 3 years:
Correlation(BTC,NDX) =...