Not taboo - it's just that straight actors still risk their careers commercially and economically. They have to please the crowd - they're movie stars; their image is their industry. It goes beyond acting.
Finally, the ecological health of the Mississippi River and its economic importance to the many people that make their living or seek their recreation is based on a healthy river system.
Look, all administrations, all governments lie, all officials lie and nothing they say is to be believed. That's a pretty good rule.