I’m going to toss in my two cents here for there to be some hope…
I feel like those lines are when we’re making sure the nastier side effects of the Night Warrior don’t overtake Tyrande and are likely in a finale to the fey zone quest line. My personal hope from this is we get to keep some of Tyrande’s edge with it, but throw her into the villain train.
On a less pleasant reason for why I think this. Turalyon got a promotion and Blizzard has a habit of throwing the pending faction villain into a seat of power at the faction capital the expansion before they get villain batted; Garrosh in Cata, Sylvanas in Legion. It’s why I am very convinced Blizzard is actually gonna give us a Tyranny of the Light expansion after SL (more so when increased antagonistic behavior by those using the light so far shown)