I have good news and bad news, good news you can post your referral and bad news you can get red tag/red trust or even worse you can be banned.
If there is one best thing that you can do, that is you must read the rules.
You're not absolutely correct. He can't post referral links. And he wont get red trust rating if he will post ref links. His post just will be deleted. If he will continue to spam ref links - he will be banned. I'm not only sure, does ref link spammers get temporarry or perma ban.
OP, there are one simple solution - you can create simple website, group, telegram channel or something where you will post airdrop affiliate links. And then you can open thread on bitcointalk (something like "Best airdrops") with link to your website.