Its Coinbase's value as a company and it has nothing to do with bitcoin / crypto. People buy Coinbase's stock hoping the value of the company would take off because it is a company that deals with crypto in particular and crypto is the hot stuff right now
A lot of people said above, and i agree, that Bitcoiners shouldn't be concerned what Buffett thinks about it. That was a rhetoric statement as to what stance would nocoiners take in the face of this valuation, if it sustains and grows in the long term. The traditional nocoiners always give the argument of "no intrinsic value". What i meant with WB's example was, would they be willing to put more of an effort and try to "understand" the value rather than try to brush it aside? That was the point and it doesn't really needs pontifications about how Warren Buffet matters or doesn't matter to Bitcoin..
Of course, coinbase isn't the first crypto company on NASDAQ. Still, its the first one with a huge user base and a large presence within the US mainland. This quote from an NYT article sums up what coinbase listing implies for nocoiners and normies out there:
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Maybe what you want is for the Binance plan to come to fruition like you highlighted in one of your own posts i replied to here.