It still comply the forum rules wether it pays in alt or mix with btc, if you mean a campaign posted on service board then you're right.
Everyone can interpret unofficial rules in their own way, but I believe that the ethical threshold for payment in bitcoins should be at least 40%. It is this ratio of percentages that will give the campaigners some confidence and will definitely not look like an attempt to squeeze into the rules of the section.
But this is just my opinion, in any case, this thread is not the property of the forum, despite the fact that Mitchell is directly related to the team,
(in the sense that Mitchell will decide for himself whether to add information about this campaign or not).