The problem is just a lack of awareness/education of the general public. As others pointed out, it's just a vapor cloud. But in addition to that, every single video clip of a massive cloud that you see is from somebody who has purposely assembled their vaping 'rig' with modules, tanks, and batteries specifically designed to produce those large clouds. To many vapers, it's a point of pride for how big their cloud can get.
For those that are specifically using vaping as a smoking cessation device, your stock device such as FIN will work beautifully, and not produce an obnoxious amount of vapor.
The amount of money a customer is willing to spend on their rig is also a factor. If the purpose is to stop smoking, the low cost of a stock rig is likely an attractive draw. To those that have recreational vaping in mind, they are going to want to spend more, as the size of cloud is likely more important to them.
