I assume sshine was talking about Freud's conjectures on evolutionary biology and the evolutionary conservatism of archaic structures in the brain.
Much of that work is on its surface unremarkable today, though not at the time. But as it wasn't really central to his most influential work, it also hasn't been (IMHO) particularly influential
It really is. In modern context "evolution" doesn't mean "any type of evolution e.g. Lamarckian evolution, evolution from natural selection or Pokemon evolution from leveling up". It really just means "evolution from natural selection" which is not only a novel idea proposed by Darwin, but Darwin also pioneered to research on this idea (i.e. going around the world and collecting specimens that could potentially falsify his hypothesis but instead support it).
That Plato thought your mind transfers from your previous souls and this is called "evolution" is simply an accident of language.