applications – Does adb shell RUN_IN_BACKGROUND ignore really works?

I did

./adb shell cmd appops set com.whatsapp RUN_IN_BACKGROUND ignore

for lots of apps in my android. However, when I go into the app settings, I still can press “force stop”. Does that mean the app is still running in the background, even if I setted it to ignore?

How can I see the apps running? adb shell ps shows too much thing and I don’t know which ones are the apps.

Also, will these settings work after reboot?