We all got loose screws here.
(Considering the original topic) Pitch to me is much more interesting.
Yes, I can hear a slight difference playing a 442 harmonica against a 440 piano, but not enough that it bothers me (or, presumably, my audience). Beyond that difference, things get a little testy. Some of my dozen or so harmonicas are still tuned sharp, say around 444, which makes me search for a more appropriate one.
I'm lousy at loading reeds, but a hertz or two is somewhat within reach. Factory 444, loaded to 440, for me is totally unrealistic. And yes, the technique is akin to bending.
There's a story about a jazz saxophonist who tuned sharp more than just a little (he's not the only one to do so) to add brightness to his sound. I heard a YouTube of him awhile ago, and all he really accomplished was to sound out of tune. Painfully so.
So bend or not bend, load or not load, tune to where you sound the best, and ignore the rest of the flock.
Tom