Okay, so I actually found time to watch the video. I will preface my comments by letting you know that my undergrad degree is a BSc in Genetics and I have taken courses specifically in Population Genetics. I say this because the presenter is a population geneticist and I want to be clear that I fully understand the lecture as it was delivered and none of the concepts discussed are new to me.

The presenter takes issue with the way in which Evolutionary Theory is taught in Polish high schools. I have no knowledge of Polish high school curricula, so cannot comment on those aspects. However, the presenter presents two points against Evolutionary theory: that genetic drift, which occurs in isolated populations, should not be considered evolution in action; and that his perceived absence of evidence for mutations that confer positive function argues against Evolution. I will take this opportunity to note that neither of these points are directly related to my earlier argument.

Regarding genetic drift, his point is that the genetic signature of a particular population may change over time basically by chance. This is true. The reason for this is that the traits in question do not confer any significant competitive advantage either for survival or reproduction. These traits, and variation in them, are irrelevant from an evolutionary perspective. This is why I disputed your point regarding evolution as an incremental process. If Polish high school text books are teaching this as the basis for evolutionary theory, then I agree they are misguided.

In contrast, I presented (maybe too briefly) Evolution as a process of periods of great change, interspersed with comparatively longer periods of relative stability. Think of it this way: some great source of stress is applied on a population. As I mentioned earlier, this produces changes at the cellular level that result in increased variation. To be clear, the stressor triggers increased variation. At the same time, the stressor is challenging survival at the individual level. Greater variation of a trait that is relevant to survival, in a population increases the chances that one or some variations of that trait will allow individual survival. This particular variant is then selected for as individuals without this variant do not survive. The result is that a variant of a particular trait which previously was either non existent or very rare, becomes dominant within a population/species.

On his second point, I dispute his suggestion that Evolutionary theory requires new positive functionality, or your extension, that it requires actual new (from scratch) proteins. This simply is not the case. Evolution, and natural selection depend on competitive advantage. While the process I described above may result in completely new variants of a particular trait, this is unnecessary. It is also possible for a particular variant that is “normally” competitively neutral to confer competitive advantage in certain circumstances. If this results in a change in the genetic makeup of the population through elimination of competitively disadvantaged variants, this is a Evolution at work.