You are supposed to be a professional pilot.
Comments like that are more and more common on prune and are derisive.
What it means for everyone who is interested in the actual topic is that the thread goes off rails as two people start bickering and develops a toxic feel.
As for entering in the flight plan take-off weight in the FMS as a cross check. My company would frown upon that. I'm not saying it's a bad idea, just saying that what seems like a good idea to some is not seen in the same way by others. At our Airline the effort is put into ensuring that the two calculations are done 100% independently in a sterile environment. When we started doing it a month after EK407 I was surprised at how often one of us would have a different assumed temperature and we would go back to the drawing board. As a pilot group we have become better at it over the years because nobody wants to be the guy with the wrong figures .