The way I read the linked article, this is not just about commercial balloon operators (which would make sense, btw...), it is about putting "balloon pilots on par with other types of pilots" which, to me means, all balloon pilots will feel the effects of this.
I don't doubt that "90% of the public would be dismayed". I operated a floatplane in Alaska when 9/11 happened. I was discussing being grounded after the attack with some friends. Their reaction was: "You mean you can just take that plane up any time you want and fly wherever? Who controls that? Don't you need permission? What if you wanted to just fly it into the top floors of the Sheraton Hotel?" etc...