Bump. Talents attract opportunists and hangers-on. That’s part of the tragedy of celebrity. Really talented people can lose themselves to the leeches (examples: Joe Louis, Muhammad Ali).
The Beach Boys got briefly intertwined with Charles Manson (through Dennis Wilson, who had his house abused by the family). The Beach Boys eventually recorded one of his songs (with the band getting songwriter credit) in lieu of payment for the damage Manson and his had caused.