The fact that government is their surrogate protector is a big cause for this trend in the first place. The marriage market is absolutely grim for men right now. The women are effectively married to the state already, and if you marry one it's more like cheating with a married woman. It's all good as long as she's happy, but as soon as something happens she'll run straight back to her husband Big Daddy Government, and he can come throw you in jail and take half your stuff if she cries and begs him.
And regardless whether you're married or not, your tax dollars are still going to BDG to support his harem of unmarried women and their fatherless children. The higher tax burden this requires makes it all the more difficult for men who actually would like to risk getting married and providing for a family.
The destruction of the nuclear family as a viable social institution is progressing rapidly, but the consequences will be felt for decades, probably centuries.