Rolex's own recommended service timeline is every 10 years, so you would actually be told it's obsolete before the first recommended service.
It is ridiculous of course that these overpriced toys have such a limited lifespan, but that's a problem with every gadget these days. Stuff used to be good for decades, sometimes even centuries. All our modern high tech is only good for years. If that. Our economy is all about disposable luxuries.
Even so, if I was Apple, I'd probably still go out of my way to make sure these $17k watches will remain repairable for as long as it takes. The comparison with other golden watch brands really drives home the problem with these disposable business models.
Leaving aside the fact that the whole thing seems like a branding mistake...
It can be repairable/supported for as long as Apple continues to make watches. It's just a matter of recycling/reusing the high value non-electronic components and making a replacement/updated watch available. That's pretty much what most "refurbished" electronics look like. It's generally a different approach than you'd take with a high-end mechanical watch where a lot of the cost is in the innards.
I think most people would make fun of the buyers.
It's also not a smart watch. You expect a regular watch to last.