Interesting. Do you have a link to that? Everything I've read states that the end links and bezel are solid. See, e.g.,
https://watchesbysjx.com/2017/03/ha...-tudor-diver-the-black-bay-sg-ref-79733n.html and
https://www.hodinkee.com/articles/tudor-heritage-black-bay-steel-and-gold-introducing
I don't own one of these watches (though I do own two other Tudors and two Omegas), so I don't really have a dog in the fight - just reposting what I have read.
The bezel they're referring to is the 1926, which practically would be almost as cheap to produce in solid gold as in gold-filled. It is quite light (even DJ bezels are not that substantial).
As for the endlinks, even Rolex two-tone endlinks are not "solid gold." Rather, a small gold part is fused to a much larger stainless part (the five-digit DJs did not even have that small amount of gold, so this technique - developed for the six-digit two-tone watches - is a definite improvement). Like the bezel, it would be easy for Rolex to duplicate this process in the Tudor, albeit with a lot less gold content.
And you really need to think about how thin ¼ mm of gold actually is. It's about the thickness of the letters in this post.
Omega took a lot of heat a few years back (including from me) because their two-tone links were not solid gold. Instead, they wrapped (and bonded) about a 2mm sheet of gold to a steel core. The Omega "gold" center links did indeed have a thickness roughly equivalent to the center links on a 16233 (which were hollow). There was more than enough gold for refinishing in future services. In fact, I've never heard of an Omega gold-wrapped center link wearing through after polishing.
The objection to Omega then was that they failed to point out that they were wrapping gold around a steel core, and not providing a solid-gold link (they obviously learned their lesson, because their current two-tone offerings have solid gold links). That is the same objection I now have to Tudor, which has similarly downplayed their miserliness. The difference is that one refinishing is going to remove almost all of that puny ¼ mm of gold, making a Tudor a much poorer investment than an older two-tone Omega.
A two-tone Tudor is now unmistakably a "poor man's Rolex."