Not to belabor anything, but that would mean post #18 is personal.
For instance, "Are you a heretic?" is not making it personal. But "You are a heretic." is making it personal.
Also, "What you have expressed contains fuzzy logic." is not "making it personal" because it expresses the poster's mind instead of reading the other guy's mind.
It is equivalent to saying "I think your statement contains fuzzy logic."