I am going to keep this brief and follow the advice I am about to lay out.
Concerning photography, I think photographers really shouldn't concern themselves with truth. There is no truth to photography except a photographer's own.
This stubbornly held perception of the validity of truth in photography, and if certain means (HDR for example) are less truthful than others is ludicrous at best, and a waste of time and energy at worst. Photography is an art, it is subjective. You are bound to see people doing things in ways that you either don't understand, approve or both. My advice, either try to understand or just go in the other direction and pursue your art the way you prefer to. Forget truth, it is not applicable in this case. Because all well conceived and executed photographs are truthful, at least in the sense that they carry truth as their creating photographer saw it, regardless of lens used, medium, camera, time of day, cropping, dodging, burning, layering, HDRing or any of that. It is all honest in a sense and simultaneously dishonest, making the whole attempt to definitively determine whether it is one or the other ridiculous. Sort of why the term SOOC is kind of meaningful and meaningless all at once. It says something that is both truthful and not all at once.
So avoid the quagmire, stop investing energy in worrying about someone else's process. Worry about your own. Go create your own account of the truth, it is all you can really do, and yet it is also the most important thing you can do.