I don't have a problem with Grimm Green or his rebuilding videos. He does build some sloppy coils, though. I'm always surprised when he fires them up and they're not shorted.
Personally, I think too much is made of the whole thing. According to some people I see posting here, you wrap a too-low coil, push the fire button, and BOOOM! . .there goes your face, house and half the block in a giant mushroom cloud.
That's really not what happens. What happens is you don't get the huge cloud you were expecting and your button, battery and mod start to get hot. If you were to wrap a super low ohm coil and just lean on the fire button - possibly wearing oven mitts so you could hang on to the darn thing . .yes, your battery would most likely vent and melt.
I personally know of 1 incident where a vapor was injured by an exploding battery. All I know about that is it was some kind of home-made device with stacked CR123 batteries. I don't know if the ohms were high or low, if the device had vent-holes, etc. In my own research, I found several incidences on flashlight forums of stacked CR123 batteries exploding. So, if anything, the hysteria should be focused on stacking batteries or possibly not using CR123 batteries. Perhaps ironically . .people stacking batteries are probably using high-resistance devices - since they running 6 volts. They may be sitting at thier computer right now thinking they are super-safe with thier 3ohm coil and they may be the ones in the most danger!
Anytime we're building a coil, regardless of our target ohms, we could make a short. If what people said about the danger of low-ohms was true . .you'd have exploding batteries everytime somebody fired a coil with a short. I can personally attest to that not being true . .having built several coils that shorted, either immediately or after a short period of usage.
Edit:
But . .I totally agree that you should not blindly follow things you see/read on the internet . .or anywhere else, for that matter. And I'm also not saying that battery safety should be ignored . .quite the opposite. Just don't tell people that thier PV is gonna explode like a hand-grenade because, when it doesn't happen, they'll probably start to disregard other safety information and might, for example, think that the potential danger of stacking batteries is over-exaggerated, too.
