“If one chooses to do so, despite 500 years of mesorah not to, to me it says that either these people are so exceedingly knowledgeable in their torah knowledge that they feel comfortable discarding the last 500 years of practical halachic practice, or, they simply dont care.”
Perhaps I am not being fair by pigeonholing them into one of these 2 options. Perhaps there is another option and that is, that despite 500 or more years of mesora they ruled the way they did due to some very compelling reason and using that very compelling reason along with authorities who do permit the practice to begin with, ruled as they did. Did they share with us the compelling reason to rule as they did? Did they even share their opinion with their own Rebbe?