I agree with it fully, it’s only based on the assumption that all decisions a person makes are made for a reason. Which is almost certainly true. If you say that somebody’s decision making doesn’t make sense, the only actual explanations for that are either that you don’t understand their rationale, or that you’re making a value judgement that their rationale is bad. Neither of those things involve a lack of making sense. The claim “this doesn’t make sense…” is always associated with an implicit “…to me”.

The same thing applies to anything that emerges from a system of multiple people making multiple decisions, or from any observation about nature. The only thing that changes is the complexity of what you’re trying to understand.