Because, as I state previously  based on what I read of my memory serves me correctly, a burning doesn't guarantee a value increment. While incentivising people will persuade them to do more and thus, create a bigger fund circulation

The present situation of the market has caused panic into the minds of some crypto enthusiasts. Some have not seen so much dip as this. One thing i know is that, crypto is very volatile. So no matter how much it falls, it will definitely rise back. Just watch out for what will happen in few weeks' time.
I will only urge you to wait and do not sell in panic.