You continually miss that the purpose of a High Fidelity system IS to reproduce the sound of the source.
Like Newman, you won't acknowledge that purposes vary. That includes among engineers, among audio manufacturers, and among consumers of audio gear.
It's the goal that engineers have been working towards since Edison.
The original goal of most playback, since Edison, was fidelity to the sound of real voices and instruments. Pure sonic realism. Is that your goal?
(It's not the goal of many on ASR, who think that's ridiculous...so they have a different goal).
Please remember: the argument has never been that vinyl is SOTA, hence it has nothing to do with the "fidelity" argument but simply about preference and choice and the goals anyone has for his system. And a non-SOTA (in terms of technical accuracy) vinyl system fulfills many people's goal for listening to music. Just like your choice of a non-SOTA vehicle (partly on it's long heritage) give you your jollies.
If I want to go for a drive the last thing I'd choose is a Harley because I don't like riding motorcycles and I truly f*cking hate loud motorcycles. That would be a stupid choice for me. But it would be the RIGHT choice for you because you like it. There's no rule that "People have to ride Harley's" as their transportation; people have choices which suit their taste. Likewise there is no rule that "People have to listen to music on a SOTA system with a digital source." Most artists creating the content don't insist on it. Most engineers mastering the content don't insist on it. The choice of how to listen to the music, and on what type of system, is left up to the consumer. Whatever suits that consumer's goal for listening to music. Like the choice of which vehicle to use for transportation.
If listening to a vinyl rig gets someone to that blissful state in music listening, that system has done it's job. It's the right choice FOR THEM, even if not for you. And if there could be said to be anything musicians want above all else, it's to have their music listened to, however a person will enjoy it most.
(Again: if most artists and recording engineers demanded people have SOTA gear and sit listening in the sweet spot to ensure a perfectly accurate impression of the signal....they'd have limited their audience severely, as few people actually enjoy their music like that, or care about such gear. That's why the choice is left up to the consumer, how to consume the music. If any particular audiophile wants to do it that way, that's fine. It's not a Rule Written In To The Universe, or in music production, or music reproduction, or anything else).