Earlier quoted context omitted.
Wrong. The market value is only what you get for it when you sell it. It's a subtle but very important difference. A good analogy is comparing the advertised price of a used car versus what you actually get for it. You might think it's worth $5k, but there's only 1 person who wants to buy it and they're only willing to pay $4k, so it's actually worth $4k, not $5k. It doesn't matter if someone else sold theirs for $5k…
I hear this all the time, but does anyone really think that the market cap is what you can really get for an asset? It's a metric, one as "untrue" as an average or median. It's not a contract, and you won't get that if you change the market, which selling and buying does. I don't think that means we shouldn't use it as a metric to use to get information from for comparisons. And I don't think that it's bad journalism…
This is true regardless of whether we're talking about Bitcoin, stocks, metals, houses, chickens, or seashells.
Most of these stupid market movement predictions are equivalent to astrology and only exist because WSJ and others have nothing interesting to say. The daily market fluctuations are pretty much random, and this has been proven many times over.