Not a sin, just not scriptural, Grisham was a different person when he was practicing law in a little shared brick building on Stateline Rd. in Southaven, Miss.
I certainly don’t believe baptizing infants is a sin. I’m Presbyterian(PCA, conservative Bible believing variety, definitely not PCUSA). It was just my tongue-in-cheek way of describing the beliefs of liberal, pro-abortion Baptists(probably better called BINOs a/k/a Baptists In Name Only).
I’m sure Hollywood, fame and the money that came with it along with the leftism of the current legal profession itself has caused the person you’re talking about to reject the belief in the inerrancy of the Bible and replace it with belief in the “inerrancy” of the Democratic party political platform(again, being tongue-in-cheek).