The latest supposed evidence of bad character is the contention by artist Ruby Mazur that Jagger "cheated" him out of the value of the "mouth and tongue" logo he designed. In the 1970s Jagger paid Mazur $10,000 to do the job. At that time that was big money. Mazur didn't negotiate trademark rights. After the fact, Jagger didn't grant them. Here is the coverage from the Post.
Mazur was naive in not requesting those rights. Jagger was being a typical businessman in not giving them. That happens all the time to us creative types. So?
Mazur seems to be still naive. Currently character matters little, if at all. This is especially the situation in the entertainment industry. When deciding whether to pony up the money for a ticket to a film, I read the reviews by critics. I do not do due diligence if those in the loop are of good character. Woody Allen has had an alleged sex abuse allegation following him since the 1990s. Sure, his brand did take some hits. But, he remains a force in his trade. I haven't missed one of his films.
Law is the only thing which does matter. Don't break the law or, at least don't get caught doing so, and one's career can proceed with only a blip here and there.