Newton-John, did you read the original post? He stated: “Yes, the red plastic cup is cheap and convenient, just like streaming.” This tells me that his streaming setup is cheap and if you go cheap, it’s going to sound bad, then no matter what your other source is, it will sound better than the cheap digital. He also compared the sound of his cheap streaming setup to some vinyl, so unless he’s comparing the color of the pieces, he is judging sound quality.
Setup an MSB dac for $100k, dsc for $200k or a wadax for $200k, then have him compare the sound quality. I have friends with $100k vinyl setups and they like the sound of vinyl over their $20k digital system. If they bought a better dac, the difference in sq between the 2 would be closer where they could be more equal or 1 would be a little better. Btw, I didn’t like his dac sound so I would have probably gone with his analog sound quality too.
I would also state that you would have to spend 3x or much more on vinyl to get vinyl to sound better. Say you have a nice $10k dac setup with the best cables, streaming software and components, you would have to spend at least $30k or much more to get the same sound quality. The cartridge alone would be $5k - $10k or more, arm $3k - $5k or more, tt base, cables, phono preamp, and a nice preamp. Digital system you can go directly into the amp without a preamp.