"Let The Wild Rumpus Begin: (Approaching the End of) The First U.S. Bubble Extravaganza: Housing, Equities, Bonds, and Commodities" - Interesting article by "Jeremy Grantham", a british billionaire investor.

You can read it here.

Calls a crash is underway, names the following specific "bubbly anecdotes":

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Quote from the article directly related to crypto:

As for speculative madness, there were already many fantastic bubble anecdotes from 2020, which I wrote about last year.6 Since then, the anecdotes have been even better. We’ve had:

• The meme stock madness of GME and AMC – two companies in declining industries further decimated by Covid-19 – that managed to rally 120x and 38x, respectively, from their post-pandemic lows to their 2021 highs, driven by message board sentiment, taking GME briefly to 20% of the entire Russell 2000;
• The dogecoin phase, in which a cryptocurrency conceived as a parody of the crypto craze went up nearly 300x, to a market cap of $90 billion because Elon Musk kept joking about it; and
• La pièce de résistance: after Hertz (one of 2020’s meme stock stars) saw a quick stock surge from announcing it would purchase a fleet of Teslas, Avis rather plaintively said something like, “Hey dudes, we might buy electric cars too,” and tripled in a day!
• But – as fits the final “narrowing market” phase of a great bubble – most of these events are now well in the past, and the last six months have seen a growing numbness to the euphoria (see Exhibit 5). GME, AMC, dogecoin, and more than one-third of all NASDAQ stocks are now all down more than 50% from their highs. Bitcoin is down over 40%, and my own unfortunate Quantumscape, which 13 months ago was worth more than GM (1929 had many extreme speculations but nothing on this scale), is down from its December 2020 peak by 83%. Ouch!