This is a fair question but the connotation you created at the end is unfair. If you're going on a tour, whether it is a storm chasing tour or a bird watching tour, you're submitting yourself to the habits of the person leading the tour. If you go on a sub-Saharan safari ride, the tour guide is going to get you within range of the lions, because that's what you're there for. You trust that the tour guide knows how to get you to the lions, and you pay for it. The tour guide, as they reasonably should, enjoys being up close and personal with the lions and all the other wildlife, and while they understand that there is an inherent risk to driving a Jeep in front of a stampede of elephants, they're doing it anyway, both for themselves and for their customers. These are both acceptable - if the tour guide had no personal interest and experience seeing the wildlife, he has no business being your tour guide, so as a well paying customer you should hope that he is guiding your tour just as he would if he were out there on his own, no strings attached and no holding back.
The same goes for any other tour, storm chasing tours included. You're paying the tour guide because you trust that they can get you there, and you want the tour guide to give you the full experience that drove him to be enthusiastic about his business in the first place. You want those same pictures of the lions or the same video of the tornadoes as he gets. That's why you paid him.