that is your error. Every change in DNA is evolutionary in nature. The question is whether what the change means is significant, and whether the resulting organism is more or less fit to survive in the current environment. Some mutations are insignificant. Some are devastating.
YOu don't know that doing so changes anything.
Some are self-destructive. For example, a political party will tend to evolve and produce many mutations, most of which would lead to the demise of the party if they continued very far. We can see this in the Democrat Party in the past half century. Even now the survival of that species is in doubt.
Not true. Not all DNA changes are evolutionary. Although my DNA and my mothers DNA are almost 100% identical, there are slight differences. These have no attribution to evolution. Mendelson's experiments on genetics did not prove evolution, it only proved variation. Life, on a genetic level has great variety, a trait in no way connected to evolution. Therefore my DNA differences from my ancestors is not evolutionary but diversionary. Evolution comes when a species changes genetically on a grand scale. Such as that fish that crawled out of the ocean to become a reptile. Or When small ancient horses grew into the large beasts they currently are. That is evolution. So, in conclusion, you are incorrect. Small changes in DNA are in no way evolutionary.