Mike Ash writes:

Never, ever said it was. All I ever said was that there is a time limit.

There's always a time limit. But it will typically be extremely generous
compared to the time required to find a qualified instructor.

They need to be in a position where they can be found and called in,
with enough time left over to find an identical airplane (or equivalent
simulator) and talk the guy down.

Unless they live at the North Pole, it shouldn't take too long.

I'm not saying it can't be done. But it is a challenge and it has not
been demonstrated that it can be reliably overcome.

Just getting a large number of airplanes to land safely in poor weather
conditions is a substantial challenge, but air traffic controllers meet that
challenge daily. The mere fact that it might seem insurmountably difficult to
you doesn't mean that it would be difficult for others.

I've never said that it's impossible, merely that it has not been
demonstrated to be possible ...

Since it has not been demonstrated, asserting that it is difficult has no
greater empirical basis than asserting that it is easy, at best.

... and the gleeful self-assurance demonstrated by both yourself
and the author of the article in question are therefore not backed up by
reality.

Neither is it invalidated by reality.