Hardly undeniable - it's so volatile, even during these times of general economic stability, that you've got to admit it's more of a speculative asset than a "store of value" ....
And we'll see, when the next economic crash comes along, if/how it stores its value.
It's possible that there will be an abrupt sell-off of bitcoin as holders abruptly sell in order to cover margin calls, free up cash, pay bills after job loss / business downturns, or even to buy other assets at firesale prices.
I mean, rather than speculate, we could look at how well it actually functioned as a "store of value" during a recent economic and financial crisis. Spoiler: it didn't.
January to February of 2020 the price of Bitcoin was bouncing around $8500-9500. Then mid March 2020, as the catastrophic economic impact of COVID was becoming apparent, and the stock market briefly tanked, what happened to Bitcoin? It tanked right along with those fiat-dollar-denominated stocks.
Bitcoin lost about 40% of its value, plummeting to a nadir around $5000, and it wasn't until June or so that it recovered.
Now, maybe that's an acceptable outcome if you don't need or want the funds during the crisis. But contrast that behavior with what happened with gold - it dropped about 10% for a week, before recovering.
I'd call just one of those things a store of value that's useful during a crisis.