I have little sympathy for this passenger or the other people mentioned. Common sense dictates that you remain seated in a taxiing aircraft.
Even once the flight is holding, that time is merely an estimate, the aircraft may move earlier than stated. If you are up and moving around, and the aircraft moves unexpectedly, you may injure yourself or more importantly, other people.
If you are an adult, it is common sense to ensure you go prior to boarding. If you have bladder issues , then minimize fluid intake, or wear Depends or something similar just in case.
Prior planning prevents p-—ing on the plane.
"...I have little sympathy for this passenger or the other people mentioned..."
If one has medical issues, pre planning won’t work.
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You have no common sense whatsoever!
There is no threat of injury to anyone in the lavs.
Truth means nothing to you.
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