darktable... garbage? Angry Photographer rants about free software

I wouldn’t know how to get in touch with Mr. Wheeler, but perhaps someone could present a challenge to him. Let him see if he could definitively pick which, out of a series of photos, were edited by Adobe or by Darktable. If it’'s “garbageware,” his masterful eyes should certainly be able to tell the difference, right? Just a thought. Anybody know how to get in touch with him?