Hopefully they won't do too much damage before the 2017 election, when the Democrats should start to be able to veto all this crap. However, i can't see how Democrats ever take back a majority (realistically). As mentioned in the article, 65 (45%) seats were uncontested. That is not a sign of there being loads of remotely competitive districts. Their best hope is that a judge rules against the map and requires fairer redistricting across the the whole state, as opposed to a small minority of seats as it happening atm.
The law has been temporarily blocked after Cooper takes legal action. He's claiming it's an unconstitutional overreach which threatens the constitutional separation of powers between the executive and legislature. Haven't as yet seen any explanation of whether this argument holds water.