You know, there's nothing wrong with taking the basic Kettlebell skills and integrating them with some other form of exercise - as long as you have a strong understanding of the baseline skills. Unfortunately that isn't always the case. Being able to mimic the basic skills with a light KB doesn't mean you know how to use them "safely and effectively" - it just means that it looks like you know how to use them.
There are a lot of "let the customer beware" situations out there in the fitness world - especially in regards to KB's. The following video (while I'm sure the presenter is sincere and well intentioned) is just another one of many that you'll find.