A “a large lined, soft empty jacket pocket with a flap” is probably a lot better than the often mentioned jeans pocket.
But still, there will be an unessary amount of polishing and movement in general.
And I don’t know about you, but I turn over my camera bag once in a while and vacuum it out. I don’t do that with my jacket pockets.
A jacket pocket will also super easily get hit by a door, accidentally fall off a chair, get turned over or cook in the sun.
There is the recently (like the last twenty to thirty years) prevalent, extremely vexing attitude of being happy to find something in super condition (even insisting), but not sparing a single seconds thought about how, after several decades, it arrived to you in that condition.
Or wanting to do anything, like changing your own behavior with consumer objects, to keep it in that state.
Even if they seem humble, and not cost much, objects like these are really not ours in the traditional sense and for us to Use (with a capital U).
They are non replaceable little gems. And should be treated as such.
Well there does seem to be quite a bit of qualification in the above that was not in your original quote. Isn't the correct definition of non replaceable little gems your children? Cameras come way down my list in comparison but like precious kids they are much tougher than we give them credit for
A few hours in a pocket in terms of wear and tear is neither here nor there IMO