DraftKings cofounder Matt Kalish has been openly critical of Kalshi, but says his concerns are with the company’s approach, not prediction markets broadly, which he sees as an enormous opportunity for the sports betting industry.

Kalish, who cofounded DraftKings in 2012, stepped down from his executive role in March to form a new “content creator agency” called Hardscope, although he remains on the betting giant’s board of directors. He has spent the past few weeks torching Kalshi on social media for what he views as misleading marketing tactics and trading mechanics. He went back and forth with many users, and his claims have included that Kalshi remains years away from developing a consumer product that is on par with the apps offered by traditional sportsbooks, as well as that Kalshi has inflated the perception of its popularity through both public relations campaigns and users, investors, and employees driving online engagement.

He has leaned into building a public persona online, including through a 25-minute video focused on why sportsbooks limit bettors, as well as a 21-minute video about why he thinks Kalshi’s $22 billion valuation is overstated.

In a wide-ranging interview last week, Front Office Sports, asked Kalish whether he was predisposed to having negative views of Kalshi, or prediction markets generally, because of his traditional sports betting background and continued financial interest in DraftKings.