The fact is that he is right: The eCig products we are familiar with are made for the Chinese market, and are made in the cheapest way possible (although with a high production quality and QA that ranges from decent to abysmal). Consumer safety is definitely an afterthought, and there are considerably better ways to make most of the pieces.
The first and foremost shortcoming is the batteries, which are unsafe and short-lived (in both senses of the term), which is why the first and most popular mods are battery mods. But the heating elements (made from a mixture of two toxic metals {nickel and chromium} and operating in a temperature regime that potentially melts or even boils them) are crap, and then they're wrapped in mesh made from more of one of those metals (either nickel, or stainless steel which is part chromium and nickel).
The cartridges are a joke, they are filled with the cheapest possible material that can do the job at *all*, and it does it poorly while melting and giving off toxic fumes and carcinogens. A "full" cartridge contains less than 1/3 of its volume in liquid, and is "dry" while still containing more than half of it.
This is setting aside the question of nicotine solution that somehow manages to be a dark brown when nicotine and PG are both clear and colorless, or if they're using lead-based solder. The fact is that these products were made in a regulatory regime so relaxed that lethal baby formula was made and distributed to consumers, and it took ex post facto regulation to hold the manufacturer responsible.
For crying out loud, it's a completely unregulated consumer product made in China, for Chinese consumers, and we're importing it gray market. What could go wrong?
What could we do better? Ceramic heating elements rather than NiChrome. Titanium mesh instead of nickel or stainless steel, fiberglass or titanium fibers instead of polyester. Lead free solder, at least for the parts that the user is actually breathing air drawn directly past. Sure, it would be more expensive, but we're already paying dollars for what the Chinese produce for pennies, and having to replace them often because they're cheap crap. There's headroom for better materials.
--Dave