A few years ago, a buddy of mine remodeled his kitchen. He opened up a common wall to the powder bath & there were 2 of the biggest fly taps I've ever seen. When I grabbed a wire nut on several neutrals, the wire nut disintegrated in my hand. The conductors were discolored & brittle. My friend was not too far from an unpleasant mess. Just say NO to fly taps. BTW, he has a standing order from me that any time he does even the slightest electric remodel, I want to see what the previous HO/DIYer did.
May your electrons flow forever, and mine, one day longer! Ron