I'd argue that most votes are wasred given that most states are solidly aligned with one party or another. I happen to live in a strongly Republican state, making every ballot I've cast for Democrats effectively meaningless.
Literally nobody here is doing that.
> Abstaining provides no kind of signal or message to the body politic.
This is true and irrelevant. Not wanting to spend the (rounding up) 10 seconds to glance at and fill out the Presidential portion of a ballot nor waste the ink from your pen to do so before dropping it in the post simply because you do not like any of the viable candidates enough to do so (or for any other reason) is a personal affair.
In the same way that not helping at the scene of an automobile accident is a personal affair, I suppose, yes.
Just not in this reality.
All the rhetoric that exists to try and drive/guilt people into the ballot box exists for the purpose of trying to get more people to turn out for their preferred candidate.