Well, don't debate for too long, make a decisive action, otherwise in this era no one waits for anyone, people move where the money is, it's not what people thinks but what works and what doesn't.
Actually, someone was mentioning about the post on hive being valid for upvote only within seven days, and then after that it can't generate any more money, is this true?
Money from upvotes, yes, they are only good for 7 days.
Tipping (or transfer directly to user wallet) is always available.
What is the principle behind this?
No clue.
So, I would say arbitrary.