I agree with him in theory, but there are some reason to consider shooting at a high resolution that you "need" to. Shooting at 4, 6 or 8k can allow the budget film maker to make up for lack of other expensive equipment or the lack of a huge or extremely talented crew.
For example, if you shoot in 4k, but will ultimately be rendering to HD, you have up to a 4x zoom/crop in post without sacrificing quality. Instead to renting a steady cam operator & rig, you can smooth out a hand held shoot every well in post. Pan and scan is an old ugly term for what they would do to a movie to make it if on standard def television, in today's world of relatively cheap high resolution cameras pan & scan is a great way to think when you're film making on a budget.