how about not calling this "clarity" because it makes it sound as stupid as "you you get 5khz of phatness".When going from 44.1k to 88.2k sample rate you not only get "1 octave of clarity", you get 2 octaves!
Headroom, that would be a more correct term.
There's nothing to prove as for the virtue of processing at higher samplerates in general, no one in this thread has argued about it. It's only an argument about
-leaving it to the plugin's responsibility (you would look stupid oversampling a plugin that doesn't need it, like I don't know, a gate or whatever)
-forcing it per-plugin
-processing everything at a high samplerate
