https://www.atg.wa.gov/news/news-releases/attorney-general-s...
> Once the free scans were installed, consumers were trapped in a labyrinth of advertisements to purchase an upgrade,” Tassi said. “Each new advertisement increased the consumer’s sense of fear, repeatedly warning of threats the computer faced if the user didn't purchase the product. In some instances, the ads kept coming until the free scan software was uninstalled or the consumer purchased the product. But the uninstall option didn’t always work properly and parts of the software remained on the computer.
But then Dave Cutler and Raymond Chen appeared on his channel for hour-long Windows history podcasts so maybe that's an endorsement of his claims.