Your comment was definitely a waste of my time (I didn't gain anything from reading it) so by your standards I should downvote you.
> I'm not going to sit here through the fifteenth iteration of BSD v GPL even if the arguments are cogent and civil.
No, you're carefully going to read them (to make sure they're "enough of a waste of my time") and then downvote them, because it's clearly a great way to spend your precious time.
There are established norms that downvoting is not just for the cases you mentioned: https://news.ycombinator.com/item?id=117171.
I'm not going to sit here through the fifteenth iteration of BSD v GPL even if the arguments are cogent and civil.