This is more something that bewilders me than something that irritates me....
I was reading a collection of submissions, the subject of which was "how ___ celebrity lost me as a fan." Almost none of the submissions were things like, "I loved Metallica until they turned into an alt-country band." Instead, almost all of the submissions were things like, "I lost respect for [some rapper] when I found out he cheated on his wife," or "I used to like [some actor] until I learned he was a Trump supporter." Someone even said that he was a fan of a particular actress until he/she found out that the actress fed her child like a bird (by chewing up food and "spitting" it into the child's mouth). Because of this, the person said he/she just can't enjoy the actress's movies anymore.
It has literally never occurred to me to care about the personal lives or political opinions or whatever of the people who supply me with entertainment (much less how they feed their children). For me, the only question is whether the entertainment product appeals to me. Finding out that my favorite bass player likes to dress up as a baby and have his diaper changed doesn't have any impact on the music he creates. Do folks really limit their entertainment to folks who adhere to specific ideologies, political points of view, sexual fetishes, etc.? Or say, "I love this artist's work, but if I find out she vapes farts, then I'm gone"? Really?