- Location
- Phoenix, AZ
If that were a problem, I think we'd have run into it before. It's possible that this is related to sustain costs killing Keiko, but that seems unlikely.Is it the fact that Keiko is paying for the Pangolins with chakra that isn't "hers"? Would that interact weirdly with the summoning? I vaguely remember that concept appearing in a fanfic somewhere.
As I said, my best estimate is that it's a concern about bricking other gennin, especially Mist Wakahisa, which would cause a political shitstorm. Jiraiya is probably the only person in universe nearby who knows of the danger, and he thought of it when putting Wakahisa drain and Pangolins together, providing narrative evidence that this is the likely cause. Now, I'm pretty sure the only real precaution available here is "identify anyone with a chakra drain ability and moderate consequence them without Pangolins with extreme prejudice," so I'm not totally sure that this is worth the risk Jiraiya is taking of "a Kage directly interfering with the exams," but it's the closest I can think of to the reason Jiraiya would be acting the way he is. It's also possible that Jiraiya knows how to reverse / prevent petrification, and so thinks he can personally stop the bad consequences.