Some miners cannot afford to hold. They have to sell and pay for electricity bill.
I never understood this argument, I have bills to pay too and I buy coins not knowing if I will profit on them in a day or in 3 months, that is why it is called investing.
If some miners want to purely mine for a daily profit and not invest, I don't begrudge them, but I know they will also cry when the price shoots up too.
I don't understand this logic. I am also involved in mining, but pay for electricity once a month. But it is certainly more than 216000 coins per day annoys me. We can only put up with it.