Look, my husband also used to work away from home, for three month stretches, for 6 months of the year. I had three small kids.
That was his job and we both agreed to that lifestyle, he was a scientist and had to be out in a remote station to do his work. It's not that uncommon in the military, with certain jobs like sailors, and some others.
It is absolutely hard for families, although some spouses like it and seem to thrive on it. But I seriously doubt his wife was blindsided about the nature of his military career even if it was a problem for them. He's likely always been away for months at a time.
There are women who have these kinds of careers too, btw, I used to know a women in Special Forces who was often away, often unexpectedly, and often without a clear end date. Her husband held down the fort at home, her child was not a teenager, btw, she was under 10.
I can't really imagine the women of FWR being critical of her for that. It seems like a double standard otherwise.
This guy's kids are teens, and he said that on one occasion he was in the woods for two months. A whole thread to be critical about that when there is almost zero information about their family life? It seems very random.