Well, that's been brought up so many times before and usually the excuses given for why Jesus didn't condemn the woman revolve along the lines of avoiding a legal trap set by the Pharisees. Never mind that the crowd were convicted of their own sins which for some may well have included the very same etc...
And the woman in John 4?
John 4:15 The woman saith unto him, Sir, give me this water, that I thirst not, neither come hither to draw. 4:16 Jesus saith unto her, Go, call thy husband, and come hither. 4:17 The woman answered and said, I have no husband. Jesus said unto her, Thou hast well said, I have no husband: 4:18 For thou hast had five husbands; and he whom thou now hast is not thy husband: in that saidst thou truly. 4:19 The woman saith unto him, Sir, I perceive that thou art a prophet. 4:20 Our fathers worshipped in this mountain; and ye say, that in Jerusalem is the place where men ought to worship. 4:21 Jesus saith unto her, Woman, believe me, the hour cometh, when ye shall neither in this mountain, nor yet at Jerusalem, worship the Father. 4:22 Ye worship ye know not what: we know what we worship: for salvation is of the Jews. 4:23 But the hour cometh, and now is, when the true worshippers shall worship the Father in spirit and in truth: for the Father seeketh such to worship him. 4:24 God is a Spirit: and they that worship him must worship him in spirit and in truth.
4:25 The woman saith unto him, I know that Messias cometh, which is called Christ: when he is come, he will tell us all things. 4:26 Jesus saith unto her, I that speak unto thee am he.
Then along come the Extremists...
4:27 And upon this came his disciples, and marvelled that he talked with the woman: yet no man said, What seekest thou? or, Why talkest thou with her?
But they were too late. The woman had already believed on Him, at which point, she went to tell others about Him...
4:28 The woman then left her waterpot, and went her way into the city, and saith to the men, 4:29 Come, see a man, which told me all things that ever I did: is not this the Christ? 4:30 Then they went out of the city, and came unto him.
His disciples, meanwhile, continued in their usual Archie Bunker Blue Collar ignorance of the obvious that was right before their very eyes - that even an adultress had been able to see.
4:31 In the mean while his disciples prayed him, saying, Master, eat. 4:32 But he said unto them, I have meat to eat that ye know not of.
Rom. 5:6-8.
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In their defense, the Twelve were simple, Popeye and Brutus like fishermen; as such, they were bound to be prone to a moment's Extremism here and there.