Agree with everything you say, but if you were in the market for an £80k Big Red would you even consider buying from Subdial, WF etc etc.
You see plenty of early to mid 90s 16520 listed around with Swiss Made dials, which are clearly service replacements as they should be tritium, but it very rarely says so and these are watches in the mid £20k+ point upwards.
Like you, I would spend hours pouring over various reference documents examining every font and serif etc, maybe people with deep pockets don’t care so much.