I don't see a problem in allowing people to engage in commerce.
I don't even mind banners as long as they don't obstruct the main content and make you click on a button to close it, I remember when every website had ads on both sides of the main element, never bothered me.
I wouldn't even mind ads on youtube if you could just skip them immediately.
It's the forcing you to consume them to get to where you want to be that makes me want to pull my hair out.
Let them do it, it's not like it's bothering anyone if one guy in one thread promotes his work to people who's interests line up with what he's doing.
I will join #DropKiwiFarms if you ever put a modal pop up ad and blur out the background, though.