no I am not Jewish (to my knowledge).
So what, do you think YHWH didn't mean it?
OK. So you must not be a jew or a christian. Christians know that the law was there to expose sin since no one can fulfill the law. The law points to the need for a savior. Jesus Christ came and is our savior. With Christ we are not bound by the law. Christ did point to the need to honor the commandments and many things in the OT however stoning certainly is not one of them nor other petty requirements pertaining to food etc outlined in the torah. Jesus said "Let he who is without sin cast the first stone". I see you are familiar with that.
So, yes God meant it in the OT for the reasons stated above. However we should not be stoning people. We should be encouraging them to repent and come to Christ. Hope that helps. Cheers.