[happytoexplain]

I know decent people with no filter. But in the past decade, increasingly, phrases like "has no filter", "doesn't sugar coat things", "calls it like he sees it", etc, have come to be used simply as attempts to positively portray obnoxious, tribalistic, anti-social, antagonistic, mocking, disrespectful, superior, or petty behaviors (behaviors which, not coincidentally, are also up over that time period, especially in leadership).

Also, your premise is flawed. CEOs get a lot of justifiable hate, and yes, many surely wish for employees devoted to the business, rather than proportionally devoted to each aspect of their life. However, there are also plenty of CEOs who genuinely don't want employees to work overtime. And Musk's attitude is arrogant/authoritarian even by the standards of less reasonable CEOs.