Because they want to support the person. These folks deal with exploitive, unproductive people involved in big deals all the time. They don’t care what or how

Because they want to support the person. These folks deal with exploitive, unproductive people involved in big deals all the time. They don’t care what or how someone is exploiting Radio Man so long as Radio is able to keep going. Another possibility is that focusing on autograph money is leaning toward the refuge of celebrities unable to book lucrative roles and endorsement deals. See comic book conventions etc.