I don't think using it as a resource would be a good thing. It's not a good tool for that. But I think it's perfectly ok to use it for making nice sentenses out of the data you found in other resources.

If you click through to the court document the most detail it goes into is

During the meeting, RNH recounted that he used an AI tool to generate ideas and shared that he also created portions of his notes and scripts using the AI tool. RNH discussed using Grammarly, and indicated that he pasted sections from Grammarly into the Google document.

RNH unequivocally used another author’s language and thoughts, be it a digital and artificial author, without express permission to do so. Furthermore, he did not cite to his use of AI in his notes, scripts or in the project he submitted.

Yeah, I'm on the fence because I do totally see how it can help and be a tool, at the same time though it can spit out a passable paper in minutes without much effort. I will say my knee-jerk reaction is if the school didn't want it used, they should say so; I remember a time when I had to sign a paper saying I wouldn't attempt to use a calculator (the teacher insisted no one would ever have one if they needed to find an unknown angle).