The "User account" of the OS are the security contexts. You can say everything should be a single security context, and this is how a lot of people have been o

The "User account" of the OS are the security contexts. You can say everything should be a single security context, and this is how a lot of people have been operating their MS Windows machines, logging in as admin constantly, but this is a stupid idea and comes with risks. Even when you say the OS can have a second root account, that the user never gets to use, you have two user accounts.