OP appears to be arguing what you call step 5 of 5. They're not even saying you should never unit test, only that it should be avoided where it doesn't make sen

OP appears to be arguing what you call step 5 of 5. They're not even saying you should never unit test, only that it should be avoided where it doesn't make sense, and that this happens more often than step-3 people like to think. Furthermore, the main direction of the article is that it's arguing for integration testing as a viable replacement for unit testing in a lot of situations, which doesn't relate to your overall point at all.