Hehehe...this sounds like the marketing KoolAid pushed by the bike component companies to replace perfectly functioning components to the non-racing majority of cyclists.You are absolutely right. All modern bike components are nothing but an evil conspiracy by rapacious manufacturers to fool gullible riders into spending large amounts of money on things of no value. You obviously see through their nefarious intent.
I'm not drinking...
My response was to the "relative inaccessibility" remark. Do most people using down tube shifters put a box around them to reduce their access? It seems that many generations got along just fine with their relatively inaccessible down tube shifters.
I never said that other shifters have no value. Please try not to change my words to make a ridiculous point.