From the guidelines[0]:
>Please don't insinuate that someone hasn't read an article. "Did you even read the article? It mentions that" can be shortened to "The article mentions that."
Not nitpicking, but we can miss things or we can be looking at different things.
Case in point, one time on a Python mailing list, I asked a question and one person pasted something from the docs. I had read the docs for what I was trying to do before asking the question, specifically the paragraph pasted and I just thought "How could I have missed that?". It turned out they were pasting the docs from Python 3 and I was reading the docs for Python 2.7. The paragraph was identical in every respect, except for the particular thing I was talking about which was changed with Python 3.
Except that doesn't apply when the "article" is all of 5 sentences.
You're not wrong. We don't know that the commenter has read that Lattner wrote he'll continue to be involved and wondered if he will in fact continue to be involved once Swift no longer becomes his main activity. Whether we like or not, it will have a smaller mind share than it did when it was his main priority and his job revolved around it.
This decision wasn't made lightly, and I want you all to know that I’m still completely committed to Swift. I plan to remain an active member of the Swift Core Team, as well as a contributor to the swift-evolution mailing list.