Earlier quoted context omitted.
It seems minor to you .
You don't say?! Isn't this true for any statement one makes, that it seems that way to him? Isn't it also obvious that for other people, it might not seem so? What you say is essentially: "other people disagree with that assertion". Well, you can find people that disagree with any assertion. That's not an argument pro or against the assertion.
With the former, you're suggesting that anything else is false; with the latter, you're leaving room for other possibilities. Statements like the former often lead people astray, which is why some people suggest avoiding them entirely.
If you don't get the difference, try speaking in E-Prime for a month. I did, and it was really educational: