This is my current pet peeve lately. With respect- I don't understand how someone can conclude that based on speculation, or their singular experience. The amount of "mine works fine, you must have done something wrong" around here is baffling to me.
Many of these companies are new, and are turning out products using poor QC at times. Mistakes happen all the time that they acknowledge. Just imagine all that we don't know that happens.
Add to that the many revisions that are happening at all times after a product release and of course the many different products that are combined that add up to one persons experience (juice, battery, mod, tank etc) -it's easy to see why 2 people using the same product would have very different experiences. What I don't understand is why would someone choose to assume user error over any company with a history of mistakes.
Brand loyalty is a frightening thing to me.