If you're referring to when we were all unconscious I can't say I'd accept it as irrefutable truth.

[Then again, when did Kaiba belief anything he didn't want to? He was still trying to figure out what all that persona stuff was with Ann. Still, at least in her case he knew the metaverse was accessed by a phone app so it sounded like some mix of augmented reality and something more in his wheelhouse. I mean, his holograms were capable of simulating death by design... COUGH.. it's just usually the safeguards were in place to keep things from going that far]

So what was she capable of?