> My guess of what the author of this blog post looks like is 15-19yrs old & male, probably aspie.

Generalizing. It's would be the same as me calling you out as being an 34 male Texas Neckbeard MAGA supporter for having the user name "pessimizer".

Is that derogatory?

As a figure of speech, which this was; not so. I was explaining the point of an personal attack.

As an actual insult, assuming and throwing it at someone is an attack. It could be derogatory if what said harshly generalizes a majority or group.

	▲	wqweto 2 days ago \| parent [-]
		Btw, you completely missed the point of the parent question. . .