Framed that way, it's less a prediction than a statement of the cyclical nature of economies, but it can still grab headlines!
Crashes don't have to be big and the recovery doesn't have to take years or even decades.
Wait, there are significant sources that don't acknowledge the existence of a deep and sharp pandemic related downturn?
A lot of them talk about crap like the price of gold, the use of BTC as a hedge, PE ratios, "technicals", candlesticks, simple moving averages, charts, commodity prices, QE, negative bond rates, near-zero interest rates and the like. Some get political even, talking about presidents or policies they don't like and why they'll cause a crash.
Its pretty easy to weave a story around ill-defined feelings, because none of these things determine the market trajectory. You can be 100% correct in your facts and/or analysis of the present but still make terrible predictions of the future.
The permabears always have a good story. They're really good at making stories for why the crash is going to really happen this year.
:D