The only point I can see in Guest from Sanity's post is that there are some people who he doesn't agree with, and this colours how he reacts to them. I think.

I assume that for all of us our "agenda" will determine what we see as "contemptible, odious or unreasonable".   How we behave towards people who we see as holding such views is quite another matter.

Goofus? That's a kind of saxophone isn't it?