Its been implied several times that those wanting to blame a medical condition on this incident are trying to take the "it could happen to me" out of this scenario.
She just did two visual jumps, down unfamiliar cave... she didn't trust she was where she thought she should be, and she had no infrastructure in place to validate that information. Pretty cut and dry.
The changing tone of this discussion is likely because as more new information about this dive surfaces, the more and more it backs up, she wasn't in familiar territory. First time making jumps(visual or not), first time in the crossover tunnel, first time doing a circuit, no mentorship(a diver who's done it once or twice doesn't count), why ignore every bit of this? Foolishness.