Casting out the evildoer refers to an unrepentant SAINT in the church. One who wishes to continue in sin. And it entails more than just the sexual immoral person....it lists several sins, including the drunkard, etc. (I can’t remember them all.)
As far as stoning, I’ll let Jesus address that for you.....
John 8
Now Moses in the law commanded us, that such should be stoned: but what sayest thou?
6 This they said, tempting him, that they might have to accuse him. But Jesus stooped down, and with his finger wrote on the ground, as though he heard them not.
7 So when they continued asking him, he lifted up himself, and said unto them, He that is without sin among you, let him first cast a stone at her.
8 And again he stooped down, and wrote on the ground.
9 And they which heard it, being convicted by their own conscience, went out one by one, beginning at the eldest, even unto the last: and Jesus was left alone, and the woman standing in the midst.
10 When Jesus had lifted up himself, and saw none but the woman, he said unto her, Woman, where are those thine accusers? hath no man condemned thee?
11 She said, No man, Lord. And Jesus said unto her, Neither do I condemn thee: go, and sin no more.
I am familiar with all of that, but here’s the thing.
This is not a religious site. There are people here who are conservative, but not necessarily religious (me included). So I react against anyone who tells me that the proper way to respond to anything is via bible verses and pious cliches. I respect your world view, but I don’t subscribe to it.
Call me what you will based on this, but that is my view.