Good article.
He warned the flood of millennial money into index funds and ETFs was fueling unsustainable valuations and putting the stock market in a precarious position. "Parabolas don't resolve sideways," he said.
Although this:
"People are missing the boat," he added, noting that he expects the best active managers to consistently trounce the market.
Here's my guess: Peter Lynch defines "the best active investors" as "the ones who trounce the market" and therefore the statement is non-falsifiable.