The part where you say that there can't be anything else that breaks concentration or it's 'contrary to RAW' is also an interpretation that may be contrary to RAW. RAW isn't clear, and implies there are 'things' that can break concentration.
If you cannot quote explicit text which states directly that there are other things that break concentration, other than the list or the other factors mentioned in the paragraph below, then no, it
can't be contrary to RAW. It's only contrary to RAW if the rules actually
state the thing you're contradicting.
But, again, my point isn't that sitting around for a hour breaks concentration - that seems well called. It's that you may not be able to rest while concentrating, an area far more open to interpretation.
Okay, that's a completely different claim.
Please don't try to pin the 'standing around for a hour breaks concentration'. I don't think anyone's actually advancing that.
All the arguments about whether or not the list is complete are absolutely exclusive to that. They're unrelated to the completely different claim that concentration prevents resting.
Conentration doesn't seem to me to be "more strenuous than eating, drinking, reading, and tending to wounds." After all, you can
cast other spells while concentrating, as long as they don't also need concentration.
EDIT: To clarify, there's two directions here -- from what breaks concentration, and from what you're allowed to do to rest. I agree that the activity of resting shouldn't break concentration. This seems clear and well within what the RAW indicates. But the 2nd direction, what can you do while resting, isn't clear, and here there exist significant uncertainty that can include a DM saying 'sure, it doesn't break your concentration, but you don't get the benefits of a rest while concentrating." This is where my 'maintaining a resource' ruling comes in, where I try to split the divide between the allowed by RAW recovery and the allowed by RAW denial of recovery. Oddly, this means, as you note, that I'm contrary to RAW, because RAW doesn't have a mechanic for partial recovery. Guilty.
I was specifically arguing that "resting breaks concentration" is contrary to RAW. "Resting is prevented by concentration" strikes me as neither specified by nor contrary to RAW.
But we do have something of a data point from the
long rest rules: An interruption of "at least one hour of walking, fighting, casting spells, or similar adventuring activity" breaks a long rest. Implicitly, an interruption of, say, ten minutes of casting spells does not interrupt a long rest. Which seems like it would at least tentatively imply that you can do things comparable in difficulty to maintaining concentration for a while without interrupting a long rest.
But I think short rest may actually imply
stricter requirements -- you don't get the "or standing watch, or fights but only if they're short" exception.