Well, there could be more than one valid opinion on some issues, certainly. But either a belt is *always necessary* for submaximal squats or it is *not always necessary*. One of those opinions is right and the other is wrong.
Of course, one might say that some people, given weaknesses of form...
Nowhere did I take a pot shot at anyone.
Certainly the question was not about Olympic lifters, but nor was it about elite powerlifters squatting maximum weights. Dave Draper suggests that all trainers ought to wear a belt when squatting. This is simply not true, and I was pointing that out.
This is nonsense. It is not imperative to use a belt at all, even on squats or deadlifts, let alone "standing curls" (!!!). If Dave Draper knows no athletes who train heavy that don't use a belt then he probably doesn't know any Olympic weightlifters, who routine squat and pull weights well in...