For the context, I am speaking about KRyan's answer to How much money can I make up with class features?.
As it is I completely agree with it, except for the last sentence I find completely wrong. On top of this I don't think this sentence is essential to the answer nor that it helps the OP in any way:
At the same time, though, he might be happy to do so—the gunslinger class, unfortunately, is hideously weak and needs all the help it can get.
If I posted an answer myself it would be a big paraphrasing of this answer just without the last sentence.
I could also just downvote the answer and let it as it is, but that would imply I don't agree with it, where most of this answer is exactly what I would answer.
I have thought about just leaving a comment saying "I approve this question, except for the last sentence", but KRyan reacted defensively to my suggestion to alter the post and then dopplegreener just deleted the thread.
If the last sentence was answering to a part of the question I could make an other answer covering only this part of the question and refering to KRyan's one for the rest, but this sentence doesn't cover at all any interrogation from the question.
What is the solution to this?
Just to be clear, my question is not about whether this last sentence is right or wrong, it's about what I should do if I considered it wrong.