[Xenograph]

The first step in conducting scientific inquiry is formulating hypotheses, which are typically based on intuition and anecdote.

This blog post is clearly telling an anecdote from the author's own personal life experience. From these experiences they have formed their hypotheses about behaviors that may affect intelligence. This blog post presents their experiences and conclusions.

There's nothing unscientific about this. Perhaps you think that it is important for the author to attach a disclaimer that this blog post is not asserting definite scientifically proven truths about reality. But it's fairly obvious to me that the author was speaking from their own experience and opinions rather than attempting to share scientifically proven facts (why even write a long blog post to do that? The research would speak for itself).