Why don't voice radio communications use FM?

Mxsmanic,

Not yet.

But you still claimed a risk. You're backpedaling again.

As far as I know (and hope), these cockpits don't have any trace of
Windows running in them.

Some do.

If they do, the situation is much more dire
than I had feared.

Just because you say so?

The problem is that the ergonomy of the systems is shifting towards a
desktop PC model, instead of an aviation model.

The problem is that you obviously haven't the slightest clue what you
are talking about - and that you are completely immune to criticism.
The problem is that you can't show any facts to back up the claims you
make. None. Zip. And that makes it pretty hard to take you even
remotely serious.

--
Thomas Borchert (EDDH)