The reason why curation awards has an off function is because some people try to game the system by posting just before the bot is due to vote. Since this falls within the 30 min curation window, curation awards are 5-10% instead of 25%.
It's always the same few people who do this. Their insightful posts take exactly 2h 39 min ;)
Well, I'm one of them too 😜
But for that to do, I don't have to take into account any such calculations. What we see is what we get! 😊