Just in the New Members forum there will be ppl saying a shop sold them a mech with a sub ohm coil and they have no idea what to do next. They saw a video about sub ohming, went to the counter and asked for it like they had just seen an ad for toliet paper. Clueless. Every video can stress safety, blah, blah, blah and it's not going to sink. To some extent it's because were used to being lied to and warnings are overly cautious; just look at the side effects from most prescriptions that are worse than the disease being treated. But on the other hand, there is a responsibily of the vendor not to sell something beyond a customer's capacity when possible (and it's not always).
From what I understand this person made an oops in that he drilled the mod without cleaning all the metal shavings out before putting his battery in. That's right up there with throwing a battery into a pocket with keys.
Every sport / hobby has it's extremists and we all benefit because they are the ones usually in front with the most aggressive, efficient designs that eventually are filtered down to the masses. A lot of car safety and performance advances are learned from NASCAR, as an example. But it doesn't mean that everyone should be a race car driver or sub ohm. The entire community is at fault for pushing mech's and rebuildables as "the only way to go". No it's not. In fact a good share of mainstream vapers should probably never touch the stuff since they don't have the time, focus / interest to deal with it safely.
All the cloud contests at events like this I'm aware of have had strict rules around safety. I'd be surprised this was any different.