Yeah, this is rational: in apparent rage over something to do with the demasculinization of a character based on a doll featured in a comedy movie based on a fictitious world centered on a doll’s marketing campaign, conservative gadfly Ben Shapiro decides he’s going to torch his entire collection of Barbie toys.
Set aside the fact that a 39-year-old man has his own collection of dolls marketed to pre-teen girls. The conservative penchant to destroy things they bought specifically to destroy in a theatrical fashion demonstrates that it’s really not about the brand or the movie, but about their desire to stage elaborate violent acts to prove how manly they are. Shapiro seems comfortable while setting girls’ dolls on fire in an angry rage; perhaps he did it often as an adolescent. That would explain so much.