Personally, I'd have no problem if Chipmixer decided to require avatar space for their campaign--it's not that big a deal to me. What I'm wondering is why it's seemingly a big deal for OP since he went through the trouble of starting up a thread about it.
Well,
I'd certainly have a problem with it. For reasons that are the subject of numerous conspiracy theories, all members of
my avatar campaign are also members of Chipmixer's signature campaign. Maybe OP is secretly against my slow takeover of the forum.

I'd love to be even more of a whore than I already am and rent out every pixel of advertising space I've got (that's a LOL).
I was wondering when you'd say that. Slots are tight at the moment, but I think I can squeeze in one more.

PM sent.