Of course, there’s another part of Seven of Nine that recognizes how truly horrible that action is, but if there’s some consciousness of the Borg Queen within her body now, we might see Seven of Nine struggle with that going forward.
If that’s true, Star Trek: Picard could be laying the groundwork for some heel turn for Seven of Nine. We already know she’s not afraid of doing things Jean-Luc and others would be appalled by, and now she’s had a taste of what it means to command an army at her complete control.