This article is too full of adjectives and not real numbers. Here's a link to the article with a real graph which was only linked, not shown, in the current article: https://www.ccn.com/ceos-quitting-in-record-numbers-could-signal-total-stock-market-collapse/

Here's the graph in the linked article that shows the trend better. https://cdn.ccn.com/wp-content/uploads/2020/02/CEO-departures.jpg

While the absolute number was highest in 2019, there has actually been a lot of turnover between 2005 and 2019. 2006 and 2008 were almost as high.