So your contention is that because something is "relevant" that prohibits the possibility of it being sophistic? The distinction is completely artificial. This bug in rails can be directly traced to recurring security problems. If that's not a vulnerability, then we speak a different dialect of English.
Ok, look, I actually think it is a vulnerability to most approximations which isn't what comes across in what I wrote.
That said, I don't think what raganwald was saying was sophistry at all. Sophistry implies an attempt to deceive. He was just being pedantic and a little narrow with his definition of vulnerability.
So when you say his argument sophistry, and then follow up with "... and I'm not interested in playing the "try to be right on the Internet" game with you." you're just lashing out. So that's probably why people (not me) where downvoting without replying.