"Safety rules are written in blood", as the saying goes, because of sheetheads like this. Yea we're just bitter because we don't all desire to become people like this.
To anyone who has had the lives and safety of others in their hands when they are planning stuff, the phrase “I think” is a non-starter. You know. And recheck twice. And have emergency plans for every possible contingency. And do if for 10 years before you are able to make a decision without someone approving it.
Seriously, I would kick a guy off my construction site saying sheet like that, let alone 3 miles below the ocean surface.