Does the coin is to burn more quickly dug new coins?
I don't understand why to burning coins?
Who can explain it to me?

You get more coins from burning than you do from PoW mining.
The point is to reduce dependence on PoW.
I'm worried that at least initially this is just a big botnet fest.
I've mined on several machines for half a week and only found 2 blocks so far.
Might be time to try the pools.