And Now, to Be Goodboy

My dear friend Opinion thinks that naming other people the following words
idiot
stupid
is an act more vulgar than if words conventionally considered vulgar (eg Fucker) were used. Don't be an idiot. Why are you so stupid? You don't have to be such an idiot. Et cetera. To call someone as such is an insult to... their mind. (lol mindhead) Their mind, that which is used
every day, to do
everything, at
every given moment.
You insult their life, foo.
Of course it's less insulting if one decides to be more... constructive with the criticism ('that's stupid, you should be doing this' as opposed to 'you're being stupid. stop it.') because Opinion says it's not very nice to call someone out on something they can't change. Or don't know how to change.
"Stop being an idiot."
Is the receiver supposed to understand immediately how he/she is being what the giver considers 'idiotic'?
Tsk.

(btw: This is all directed at a particular person I know who is a fan of using these words. The person hasn't used them to me in... years, I think, but they've still been using em on other people. And if you think it is you I refer to, and ask me if this is so, you will be told it is not. So fret not.)

-Zan