Idea 1) No, this is how it would work (OP updated). It is a social media platform, users don't have to do anything except posting content if they want:
That is exactly what I meant... They post their usual stuff on your platform and other users have the option to tip them instead of liking/upvoting and this tip comes from
token issuers who want their token distributed. I do get your idea but it can be exploited pretty easily and doesn't ensure a fair distribution of the tokens. Fair distribution is a hard problem to solve without KYC... There are certain ways to limit 1 account per person but they all have their shortcomings... I still don't see what value it brings to the table besides being a middle man in airdrops... Anyway, Good luck with it if you decide to pursue it...
This idea about fair distribution might be overthinking it. I remember something Adam Back said about Bitcoin a long time ago. He was trying to solve the problem of Bitcoin being deflationary for a long time, instead of being an early investor, which he regretted later.
This problem doesn't need fixing. As long as everybody gets something it doesn't matter if some people get a lot. Use open API's and open source all the backend codebase and let everyone try to exploit or fork the platform as much as they want. The important thing is that the users themselves can moderate the timelines instead of centralized admins doing it for them.