Just because Scripture is inerrant...

...doesn't mean you are. Likewise, just because you disagree with the Church on some point doesn't mean you are a prophet sent by God to correct the Church. It could just be that you are a loudmouth with a Bible. That goes, not only for Fundamentalists who are sure they've disproven the priesthood by citing "call no man Father", but even for Catholics who think they are the first person to notice that Jesus never said anything about abortion, gay marriage, or nuking Hiroshima, so that makes them alright.