The CDC recommends quarantine only when exposed mask less for 15 minutes. So while I hear what you are saying, you can understand why someone in that situation would consider it a major chumra
while that is the requirement by the CDC you can see how ridiculous it sounds.
If that's the case why should masks be required when walking in the street?
The CDC also says it's airborne and if that's the case why do they only require 3 ply masks or better yet face coverings?
No matter which way it's sliced there are so many questions.
This is partially the reason for people not complying.
I'm not saying it's a good excuse, it's not but the science they claim to be using is questionable at best.