> Every six months is simply too often. If it was switched to an adjustment made every 2-10 decades with at least a decade to update the file then the problem would be greatly lessened.

You seem confused. It doesn't happen every 6 months, it gets announced 6 months in advance – since we know there won't be one this year, it will have only happened twice total in the 10 years prior to December this year.

That's hardly an enormous and constant disruption – turning it in to a multi-minute disruption "every 10 decades" would likely be more concentratedly disruptive, leading to more calls to put it off to avoid the immediate pain, leading to ever-more accumulated error.

Spreading the pain out into a leap second every few years feels like a much better and more sustainable solution. This keeps processes in-use and up-to-date rather than long-forgotten-and-everyone-who-knew-them-is-dead.