This question is just a simple and straightforward way to get at the agent's viewpoint bias; there are a million other ways that you might think are legitimate questions. Just in general, the goal of understanding the biases of a source of information is clearly a worthwhile one; at least in the human case, a person's bias will color everything they think and say about a topic.
I was being a bit of a prick with my comment, I could've written it more clearly. Sorry for that. My point is this: what do you think is likely to happen if the requirement to write these documents is removed?
a) In the absence of an impetus to justify architectural decisions, people cease creating overengineered architectures.
b) People with an inclination to overengineer systems continue to do so, without documenting their reasoning.
If (a) is plausible, maybe the documents are indeed pointless (or worse). I'm arguing that (b) is far more likely, and it's a strictly worse state of affairs than one in which decision records are written.