Maybe for a corporation, they’ve got the bottom line “our lawyers cost more than the lawsuit” to worry about. Not for an individual. For folks like Simmons and Cosby and Weinstein it’s all about protecting the public record.
If it was during a radio show, there probably is already a public record.
Settling could mean the accused is guilt or it could mean the accuser is a goldbricking liar. But the fact is, settling not prove the guilt of the accused nor the lies of the accuser.
Another thing that would favor the truth of her allegations - if Simmons committed a crime against this woman (battery for instance) then she should seek criminal prosecution. If she is telling the truth, she probably has evidence of probable cause.