Unfortunately that's the only thing to speculate about for the large majority of people, it's the whole story "Did he know?" "I think he did, how despicable!" "he probably helped run it", otherwise it's just a story about a rich, old single guy going to a massage parlor to get his happy ending.
Without the human trafficking element it's really just a shoulder shrug story imo. It boils down to whether you think he knew or not and if he was involved somehow.
I can only speculate as well but I think he's just fun time Bob these days and rolls around doing his thing not paying to much attention. He can barely speak after SB's, he's dancing around on stage with hot singers, hanging out with young hotties and probably frequenting many massage parlors half ****ed and clueless.
The story didn't surprise me in the least, just that one element which only becomes an issue if he knew.