The video you watched was of the Petri 22mm. It's not s huge issue really. However, those 2 are the new Petri 24. That "problem" is gone. They are easily the closest thing to a RDA in a tank I've ever used. However, they have 1 big con. Price! I'm a sucker for them.
Btw if you watch YouTube videos on the Petri 24. There were 2 types produced a prototype type about 12 months ago and this production model we which was brought out in the last month or two. Pay attention to the date of the video to tell which one you are watching.
Although a brilliant tank (the design is all about flavour, gold is inert so doesn't alter flavour), there are tanks that perform basically as good for half the price. But I'm just a sucker for the bling. Both the 22mm & 24mm's I use constantly. I'm a dotmod fan, totally biased.