> Sorry, what had you under the impression I was trying to make friends?

Why, are you here to make enemies instead? If not, and heaven forbid there's a space between the two, this should apply:

https://en.wikipedia.org/wiki/Cooperative_principle

Or do you really need to be explained the point of civility?

> When people who suck show up to your spot, you make them go away by making it clear they’re not welcome.

Except you were not making things clear. On the contrary, you were pretending that there was ambiguity in their words, which arguably only complicated things. This is a very cowardly and sly way to make any point.

Mind you, for the unwelcome people, the downvote and flag buttons are the way to go. Comments are for conversation.