This was a mildly interesting article, but for most chasers, there wasn't anything new or groundbreaking discussed.
I think that safety is a legitimate concern with storm chase tours, but it seems as if most are actually pretty responsible. Whether it's avoiding getting to close to a storm or being cautious otherwise, I have not heard of many issues. The article even references some attendees saying that they felt their tour group was being overly cautious.
The only issue I've had with some tour groups is that I've seen their vehicles parked on main roads with "tourists" taking photos in the middle of the road. I'm not sure how much control the guides have over this, but I have witnessed (as others have) on multiple occasions, tour vehicles parked on the road and there are people running back and forth across the road in traffic. An easy solution would be to just wait to pull off until the next dirt road, so there's less high speed traffic, but I'm not here to lecture the tour guides on how to run their business.
Again, I've encountered many tour groups in my years of chasing and issues are fairly infrequent. The article is actually fairly balanced, weighing at least some of the pros and cons of the chase business. The only thing I would have liked to have heard discussed more would be the educational background of the storm chase tours. It's not all just about flashy vans driving into bad storms, I know for a fact that at least some of these groups have meteorologists and other scientists on board. How big of a role do they play? Do most tour groups have at least one meteorologist helping run the show, or are they generally just storm chasers who are more self-taught through years of experience? How many have both?