Tzav. Isolation, Insulation, and the Power of Immersive Environments

I am, quite naturally, thinking about the nature of social isolation.
In this week's parsha we find Aharon and his sons unable to leave the house for 7 days and nights! :-) (Actually it is not their own private dwelling; it is the Tent of Meeting!)
"You shall remain at the entrance of the Tent of Meeting day and night for seven days, keeping the Lord’s charge—that you may not die—for so I have been commanded." (Lev. 8:35)
This is part of the seven day Milu'im ritual which inaugurates the Tabernacle and the priests themselves.
But why are the priests restricted to the Tabernacle for seven days and nights?
What does this achieve?
One way to explain confinement is that it functions to protect a person from danger lurking "out there", in the streets. The paradigm of this model is the night of the Exodus:
None of you shall go out of the door of your house until morning when the Lord goes through the land to strike Egypt. (Ex.12:23-24)