Popular entrepreneur and financial educator Robert Kiyosaki has renewed his criticism of exchange-traded funds (ETFs), and argued that many investors who believe they are diversified are actually concentrated in what he calls the same category of “paper assets.” The Rich Dad Poor Dad author used a new term, “de-worsified,” to describe portfolios built around ETFs and other financial products rather than direct ownership of assets. His comments included Bitcoin (BTC) ETFs, which have become one of the most popular ways for traditional investors to gain exposure to cryptocurrency.