What if the person does not know what's going on? Bobby stated directly that he thought that he was going crazy. I can find it entirely plausible that he might not have been able to figure things out, at least not in a timely manner.
There's also Jean's perspective. Even if she isn't intrusively reading his mind, it is plausible given how Marvel telepathy works that she was picking up stray, intense thoughts from Bobby. She would have known what was going on, and that Bobby was upset. Would it have been ethical for her
not to intervene if she knew that her friend was suffering, knew why he was suffering, and could plausibly help him?
It
is acknowledged in the comic. This analysis
http://teaberryblue.tumblr.com/post/...ats-fine-and-i
makes the point that Bobby's distress is made clear, particularly in his closed-off body language, his actual hiding, and his inarticulateness.
This, along with the popularity of the comic, is why I think the O5 won't return. I suspect that they might not return.