It’s only shocking to write it, or declare it as sacrosanct
Many people practice it, and women’s movements that put most energy on doing the opposite have since dialed back to pointing out that they were fighting for choice, including that choice of not being in a workforce. An option of a “soft life” that is wildly popular, and timeless. People just needed a new way to say it.
If it was culturally supported for men to be subsidized by another, a large percentage of men would immediately take that graduated and intellectually diminished role too. This is not a reliable option and is rare.
If common, it would unironically solve representation imbalances in other fields, since it would no longer be about shoehorning women into them, because enough men would leave on their own. A level of enlightenment still missing from Women in <field> fireside chats at every industry conference worldwide