I've been on this board for a long time. In all these years, I've never really found JFP to be rude or disrespectful to anyone, even if he disagrees with you. And he still spends time giving thorough answers if you have a question. Even after I've said many times here that I don't believe in changing out my original IMS, and still use Mobil 1 0w-40 at Porsche recommended (rather long) oil change intervals, he still never tries to dissuade or berate me or anything. I think he's a solid contributor here, as are other folks who were mentioned previously. The only person I thought was a bit condescending in his tone to folks here sometimes was Jake, but I digress.
On the other hand, I think your comment was valid too- some people would be willing to change out the IMS, but only if they're going in there for something else like a clutch job. JFP disagrees on the importance of that in terms of what he's seen and what he believes. You both have valid points. Doesn't matter who's right. You both could be due to your risk tolerance. I, personally have a very high risk tolerance, have owned my Box for 16 yrs, and still haven't changed out my IMS, so I believe I'm right.
I'd just forget it and move on. No big deal.