I'm not referring to the standing negative squat as in weight lifting, I'm more referring to the dead life move done by people with longer legs and shorter torsos/arms. You probably know that there are many variations of dead life. What I was referring to, which I took the article to basically be advocating, was a type of bend (lift) that isolated the spine as much as possible. And I was arguing that use of the spine in a bending, flexing way is not inherently bad - it's just that typical modern (sedentary) life allows the core to weaken and reduces flexibility.
Instead of telling people to isolate to avoid injury, we should be telling people to move more (starting lightly) to increase flexibility - then add weight to increase strength everywhere.