I was not aware of this until today. People use work profiles on Android to isolate their more privacy invasive apps. If you want those apps to be tunnelled through a VPN, you would have to install the VPN application you use on your work profile separately and turn it on separately in your work profile.
Me every time I realize the ability to completely block network usage for an app is not Stock Android
It’s moments like these that make me realize oh Android is built primarily as a advertisement tool