Jews and Catholics and folks of other religions who don’t believe a word that their doctrine teaches for the most part shouldn’t be addressed as belonging to any religion. it’s like an ex baseball player saying he’s a baseball player. He’s not anynore.
Breaking the tenets of the doctrine will happen occasionally because we are human but that is a lot different than not believing in them at all.
Thou shall not kill. That leaves every Democrat out of the picture already. You are voting for abortion when you vote democrat.
Thou shall not murder, yes indeed. Both Catholics and Jews provide for a person to disqualify him/ herself from continued affiliation for the most serious transgressions But there’s no mechanism announcing that. Both faiths also provide for excommunication by the clergy - which is visible-but neither wants, does it very often. The result is as you say— A bunch of apostates running around claiming they’re still affiliated. Including a few in the clergy itself ( sane for some protestant churches) It’s false advertising