Reb Eliezer: You make an interesting point regarding the Aruch Hashulchan and hair covering. The Aruch Hashulchan strongly denounces and decries the terrible machla of married women not covering their hair and says it must stop. Then he says since it is prevalent in some places therefore you can krias shma in front of her if you don’t look at her.
To take your example to this discussion, perhaps a small degree of immunity is obtained, but nevertheless it is very very wrong and must be stopped.