Incorrect. The majority of the teachings in the New Testament are to the individual, but this writer's thesis is so profound, G-d MUST have supported it.
In Acts, we see a beautiful picture of Christian community fleshed out.
Unfortunately, the writer seems to be unaware that community failed in that it was unsustainable. Contrary to popular belief, every Biblical practice was not ordained by the Almighty. One could make the case that picking a replacement for Judas was premature, because G-d had Paul in mind all along. Similarly, many assume something is amiss when the exuberance of first coming to Jesus cools.
The writer is entitled to his opinion, but he should not believe that opinion is informed by anything more than a superficial familiarity with the Biblical narrative.
I say that because something about what you say strikes a chord...
I don't criticize the writer...just because your perspective is deeper does not mean the writer in this case is invalidated. That being said, I will read what you say.