Chuds think seed oils are bad, and they're super weird about it. Remember the soy thing from a few years ago? It's basically a rehashing of that. They think it's "feminizing men" and that real men only cook with lard and butter (olive oil is the exception because le "trad med diet").
Everything, and I mean EVERYTHING is part of fake "culture war" to these rightoids. Whatever clickbait outrage slop of the week conservative commentators decide is important becomes part of their identity and they have to bring it up at every occasion to own the libs.