If he turns out to be a Blackpink anti, then he's a legend really. A legend of pettiness. Other anti's could only dream of reaching these heights.
But I suspect he's taking the fall for someone more powerful, maybe even Yoon himself. I could see him feeling slighted at having to deal with Jill Biden (aka a woman) in the first place, so her requesting a girl group to perform was probably the last straw for his pride.
Something I really dislike about Korea and I've seen it many times, is the way powerful corporations, apparently even government, will act like spiteful toddlers. I'm sure it happens everywhere but usually in a more underhand way, because most professional people don't want to look bad. In Korea there's something so overt about it. Maybe a mix of "you mustn't question elders" and "you mustn't question men" leads to this stunted growth.