That’s adaptation. Not evolution.
Evolutionary theory requires addition of genetic information, positive mutations, and increasing complexity. It describes one celled organisms becoming more and more complex, species becoming other species, etc. and this it explains that amoebas become fish became squirrels became primates became humans.
These statements are not opinions nor gibberish.
No.
You are conflating some lay person’s definition of the theory of evolution with the scientific hypothesis. It is oversimplified and does not convey the actual science. The amoeba to whale is one facet of evolution but that is not where most modern interest is directed and it is far from the only kind of evolution. That was the infancy of the science, Darwin. Now interest is in phenotype and genotype and the development of behaviors like altruism, courting rituals, camouflage in butterflies and other species.
Evolution is driven by advantage to the organism such that the characteristics that enabled that organism to thrive will be passed on to future generations in greater number than the characteristics of less successful organisms. In time if they improve survival or mating success sufficiently they will dominate. Virus generations are very short so changes driven by vaccines are evidenced much sooner than with animal.
This is an interesting article. Complex organisms or behaviors is mentioned at one point but do not fail to put that into context. That is one type of evolution that is being studied: mating behaviors, bird songs ect.
Thanks for your response since in looking for a way to explain I stumbled on this very interesting article. Freegards : )
https://www.pnas.org/content/104/30/12235