It is bullshit to attack PoW coin with timewrap. Only some PoS coins can be attacked for purpose get more PoS rate for himself.
In PoW used cumulative difficulty, and win chain with 30 blocks with Diff 100, than 59 blocks with diff 50.
I agree that manipulating blocks is BS. I agree this isn't a traditional time warp. Yes, we're aware of how chains are scored. As I keep saying - this is simply some idiot exploiting a hole that's been in POW coins since BTC hit the streets in order to take block rewards and manipulate the difficulty. We've known about the possibility of this for years. Frankly, it's a weakness of all POW coins. The universal cure is hash rate, which is why we're happy to see more miners on the coin as our value continues to increase.