The real problem here is (in this case) lazy teachers. These kind of tools should only be used to flag potential AI generation. If the teacher read the essay and thought it reflected standard work for this student, then all would be fine. Instead they are just running the tool first to be lazy and taking the tool as gospel.

This reminds me of when GPS routing devices first came onto the scene. Lots of people drove right into a lake or ocean because the device said keep going straight. (because of poorly classified multi-modal routing data)