on the course and in your manner of 'conversing' on this forum. Try thinking first.
If the person throwing multiple discs does not know any better , he will not find that out by you throwing on him, "fore" or not.
I guess it is
possible if you then walk down there and explain that you threw on him
because of his extra throws, and what the etiquette is, but it's doubtful he'd want to listen at that point.
No one is a better listener when they think they are being messed with. You are yet another example of this when you get defensive with people pointing out the possible problems with your etiquette teaching strategy. Just substitute the phrase "butthurt" for a disc thrown at you
your posting etiquette could probably use some instruction/improvement, how would you appreciate that being conveyed to you?

or

we're all looking forward to better communication on and off the course