I agree with you in the sense that payments could (for any and all campaigns) be as $x per post but paid in Bitcoin if that is what is decided between the campaign manager and the team behind the project. I think with Bitcoin reaching new all time highs of $40,000+ the amount being paid out for campaigns would be extremely high unless they are fixed in USD$ but paid in Bitcoin.

If campaign participants are getting thousands of USD$ every month in this campaign then great for them but it seems almost inevitable at some point that paying out over BTC100 @ $40,000 which is around $4 million does not seem like it is the best usage of seeking promotion to their website. $4 million would be more than enough for a massive social media campaign and catchy television ads running in various languages in various countries across the globe.

Congratulations to all that have and still are participating in this campaign, from what I recall I applied twice but was not selected. Even if I had been, I think I would still have the same outlook about the payout system.