There's an argument that putting children through traumatizing simulated events has unclear psychological consequences. Western education at young ages goes surprisingly graphic when talking about certain historical atrocities (think seeing Schindler's List in grade schools). While this sort of shock-and-awe storytelling can be impactful, its consequences may not be all positive.

Another issue is that a stronger reliance on "empathetic/emotional" learning experiences can delve too far from education and too much into propaganda. Group A can produce material that hits deep at our psyches and highlights the evils of Group B, and vice versa. Whose side wins the popular debate isn't from the facts on the ground, but from which group has the tech/production skills to make their story grip the heartstrings. In that way it's like any other over-produced documentary, but VR can have the seductive appeal that it's "more real" and thus more objective.

The issue of "experiential VR learning" becomes harder and harder to do right the further back in time you go, because of the mistake we moderns make when trying to "relate" to the past. We often imagine time-traveling and dropping ourselves in a past environment, thinking that's what it would be to be, say, a medieval peasant. We too easily forget that our own mindsets and approaches would be fundamentally different in some ways.