That's because it is essentially a Republican plan.
Another day, another cave-in by the Kentucky Democratic Party.
What real alternative did they have other than to lose in court? When the courts decided not to defer to the legislature concerning the numbering of seats the GOP in the Senate lost much of the potential upside in passing an aggressive map. As a result, they have little incentive to enter into a deal with the House to rubber-stamp each others maps. Either the Democrats in the House were going to have to draw a map reasonably fair to its Republican members, or, they would have had to prepare to go to court. They could have gone to court to defend the notion that an impartial judge ought to pair a lot of Republicans and no Democrats while needlessly splitting counties in the process, but, apparently, they have decided to draw a map that conforms to allegedly "neutral" redistricting principles that is more favorable to themselves than other maps that also conform to those principles. By all means, consider that betrayal.
The Kentucky House is the last chamber in the South not to fall to the Republicans. The new map may very well be more favorable to them than the previous map. It now seems somewhat inevitable that the Kentucky House will join all their Southern peers.