it's accurate
you don't have to believe me, just think that Satoshi alone owns 1% of the bitcoins in circulation, than there are a major crime organization in Bulgaria that owned $ 1.2 billion worth of btc (currently owned by the Bulgaria government), the FBI that seized many bitcoins around the World (1.5% of the total), including those of silkroad, followed by btc trading companies.
only a quarter million users (4% of the total) own a full bitcoin, while the majority owns less than a half bitcoin.
they bought at X and sold at X minus some, not much, but a loss nonetheless
or bought at Y and sold at Y plus some small amount and.never tried again, for various reasons including "not worth the risk".
technically not a loss, but not a good investment either.
also many thousands wallets are inaccessible because the keys were lost (a friend of mine made almost two bitcoins in payments 8 years ago, he lost the keys soon after...)
while the 1% got extremely rich, the 99% had neither the capital or the will to risk to get there. which is completely understandable.