That's not economical. A human mission to another planet is far too expensive and risky for the little advertising it would deliver. They could do that already on earth, send people to the north/south-poles, or even send them to the moon.. This would all be cheaper and still have similar effects.

But the mindset is probably not wrong. Maybe Jeff Bezos can rent his dick-rocket to Red Bull, so people can spacediving the atmosphere. The necessary security-tech they have to build, will probably very beneficial for actual astronauts later.