Irony doesn't always translate very well in forums.Never a truer word spoken.
What other universal truths are there in photography?
Why does digital technology preclude back-to-front sharpness?I have very rarely seen a sharp shot front to back and side to side with digital, unless its a picture of a brick wall.
Digital technology precludes it, hence invented terms like Bokeh.
The only photographers who can display truly sharp photos of most subjects and at virtual any angle of the subject are the medium and large format film guys.
Though focus stacking has helped digital sharpness.
Lightroom is superb photo software.What other universal truths are there in photography?

I think the irony was clearly lost.Irony doesn't always translate very well in forums.
Are you looking for examples of "universal truths" that are clearly untrue, as in your example?
When people spout rubbish most things are lost.I think the irony was clearly lost.
Yes, it was lost on me, hence my question, before going to the effort of a serious reply.I think the irony was clearly lost.
It’s generally used as a joke when sports/press photographers don’t quite get the shot. Hence if it’s not sharp, just say it’s art.Yes, it was lost on me, hence my question, before going to the effort of a serious reply.
I don't know of any comparable "truths" but I haven't heard anyone cite the one you offered
Ah, as I said, not come across it before.It’s generally used as a joke when sports/press photographers don’t quite get the shot. Hence if it’s not sharp, just say it’s art.
Absolute madness, I don't know what I had been thinking.Why does digital technology preclude back-to-front sharpness?
That’s the point of the phrase. Stems from people not getting the shot right, and then trying to claim it’s “art”.If the first thing that people notice about your photo is the image quality - good or bad - then that photo is a failure.