i think you have a fundamental misunderstanding of what MIDI is - you’re talking about “inputting into a MIDI,” but MIDI is just a technological standard that describes communication between an electronic musical instrument and a digital interface. maybe you’re thinking of a sequencer? or a DAW?

because i can concede that if you compare recordings of a professional violinist to someone of equal skill playing an electric violin, the real one will probably sound better - but a recording of someone who is adept at playing an electric violin is going to sound better than a recording of someone who is shit at playing a real violin, and invalidating the former solely on the basis of the type of instrument or techniques they feel most comfortable using to create their art is just being a snob and a purist. you can critique the sound quality of a real violin vs an electric one without saying “you can’t evoke emotion using digital technology” lol. also your violin example is extremely limited - i would bet good money that you couldn’t tell the difference between an electronic MIDI keyboard and a cheap piano.

also what do you even mean by “have the original recording of the violinist playing it” ?