If these were to be part of the Apple Headset then please explain how this would work with your nose? Surely the lower central curved bit would have to follow the one above it?
I share some of your skepticism about these parts being Apple Goggle parts. However, to the quoted point, you might consider the relative 3D location of these within the goggle mockups. The front of all goggle mockups we've seen (the part farthest from the eyes) is well removed from the face by what appears to be an inch or two in the (3D) z or depth plane.
If these parts are basically rims for that edge of the depth plane, the other end is where accommodations for nose and potentially corrective glasses can "fit" too. The depth of the space from front to back is where noses can be made to fit. Else, consider other face covering helmets we already know well like motorcycle...
...or welder...
In both cases- since we know those products- we know there is easily room for noses and glasses inside them. Now imagine stripping them away to their frame. For that motorcycle helmet in particular, stripping it away to a frame sans black plastic we see might yield some front parts that don't look so different than these rumored pieces.
Similarly, look at either "ski goggle" mockup image associated with all of these Apple Goggles stories. Imagine away that plastic so that it is only a frame. What would be the skeleton frame of those goggles? It seems reasonable the very front could have a frame shaped like these rumored parts. Build an inch or two of plastic "walls" towards the face from these and shape the face-touching end so that it can accommodate a nose and glasses.
Again, I'm a bit skeptical about these parts too, as someone in another thread about them showed what seemed to be strong matches to parts inside of HomePods. But, at least for this one point, it is not hard to imagine a "fit" for these in Apple Goggles with plenty of room for any nose too. You just need to think about them not in 2D as shown but within a 3D goggles structure.