IMHO these are not 'left field events' though, as they are...

IMHO these are not 'left field events' though, as they are obvious risks or are already actually happening. And if there's anything that central banks have taught us in the last 20 years or so it's that they won't let a good crisis go to waste. Continuing economic disruption may help to reign in persistently high inflation and an economic crash is just the recipe for yet more government and monetary stimulus which would continue to be supportive of asset prices. There may be a temporary reduction but I think it would quickly be bought to front-run the central banks.

I think the real left field event in regards to asset prices is a return to 'normality', economically, as well as government deficits and monetary policy. Almost no one is expecting this to happen, and many believe that it can't without collapsing the entire system.