He may have resigned, but there's no acknowledgement in his "apology" that he has any understanding of where he went wrong. He says he was trying to be humorous and honest.
If women do cry when he gives criticism, it makes me wonder what he's like at giving criticism - is it constructive and helpful, so they can do better in future by learning from mistakes, and with praise being given where it's due? Or just bullying, beating them down all the time? You will probably get the odd one or two who cries, if you are managing people over a long career, but if it's something which happens regularly, I suspect there would be one common factor, and it's not the recipients of the criticism.
And he's clearly missed out on any training on diversity or harassment, if he thought it was appropriate as humour - especially in such a forum; it was hardly down the pub with his lab mates.