Isn’t it enough to just enter your password once to login, then receive a warning whenever you’re about to do something potentially dangerous?
If it’s such a big security risk, how come the most popular and widely used operating systems in the world and their users seem to be unaffected by it?
I guarantee, most new users coming to Linux from Windows/macOS are going to laugh and look at you funny if you try to justify entering your password again and again and again.
You are more than welcome to remove the need for any passwords at all on the linux systems you admin. Good thing about free software is that you decide how you want it, hack up or put up.