Since the beginning of October, the price of bitcoin soared to its highest level and even the creation of a new ATH. Of course, this is influenced by market sentiment which has continued to improve since it was driven by news of hedge funds controlled by several large investors. What's more, bitcoin has historically performed well in October. however, even though the bullish situation continues for bitcoin at the moment, there is still the possibility of a price correction for the rest of the year.
We could say it could be taproot, we could say it could be ETF finally starting, we could say coinbase being listed on nasdaq, we could say many many things that made it go up. But the reality is that, we just bought bitcoin, that's it. There is nothing that could be exactly one reason that causes it to go up or down, if we want to limit it to just one thing that would be us buying for it to go up, and us selling for it to go down.
However if you are looking for the underlying aspect of why then we would have to say that there are many "smaller" stuff all get together and create this. Just taproot itself is definitely not the reason it moved from all the way down from 30k to suddenly make it 60k+, however it was piece of the puzzle, then we had other stuff and other stuff and more stuff and suddenly each of them made it bigger and bigger and allowed us to be here.