Leap seconds are a means to an end. It isn't just astronomers
who care about Earth orientation. Systems for navigation at sea, on
land, in the air, and in space are dependent on the current definition
of Coordinated Universal Time as exactly that,
In the venacular of today, this claim is an "alternative fact".
As someone who gets paid to Celestial Navigation in a GPS denied
situation, the OP's claim is correct.
Let's be more polite than to call people liars, err, alternative facters.
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