I've made a new video against low-carb diets

[FlatAssembler]

I was referring to this diagram from the video I was responding to:

We agree it is simplistic at best, right?

Was it the lack of labels or units on the axes that gave it away? Of course it's simplistic! The nice doctor has made a simplified diagram for a very non-technical audience. Simplistic does not make it wrong.

It's wrong because, like @LadyForCamus said, while protein you eat does raise your insulin levels, it does not raise your glucose levels. Insulin and glucose levels are not strictly correlated. And the effect of different types of fat on glucose levels is way more complicated than "essentially a flat line".