Joseph,
Once againg you have proven yourself to be clueless. Frum married women in Russia, Poland and Lithuania did not cover their hair all together. It is a historicall fact you can not deny (well, you can, but anyone interested in the truth can’t). See the Aruch Hashulchan who paskens that hair in longer a dover sheberva, since woman don’t cover it anymore. Today of course it has reverted back to being a daver sheberva.
I can’t list names, but some of the most famous rabbonims wives, you learn their s’forim, did not cover their hair.