Says who ?
There's nothing 'native' about the title of this thread.
If you choose to drown in a sea of semantics, by all means do so. But here are the actual words the OP used:
These RAW captures can be seen in Lightroom mobile but not in the camera roll. So if I connect the iPhone with the MacBook they don't show up in the Photos app on the MacBook. If I share the RAWs from LR mobile with the camera roll or via email, LR mobile sends a jpeg to share.
Sync via WLAN also doesn't transfer the RAWs to the MacBook. It jpegs it syncs.
The question by the OP was how to get RAW images from Lr Mobile on his iPhone to his Macbook Pro. I pointed out that you can't do that (within Lr Mobile) without utilizing Adobe cloud servers. That method is by design, not happenstance. Your workaround is proof positive that image files can be easily moved locally without the use of cloud servers from one device to another and Adobe is, by choice, not utilizing that capability within Lr Mobile. Period.
Yes you can by all means drag along additional wifi routers, batteries, chargers, cables, etc. and employ additional apps to circumvent the issue ... but it should be so much easier ... Especially if you connect the phone by USB directly to the Macbook as the OP shared. The fact is, software solutions should simplify and streamline our tasks, not create additional tasks to accomplish. Pointing out where Adobe has missed that mark and why the OP cannot easily transfer images from his phone to his laptop is very germane to the discussion.
By the way, I did not and do not
'advocate' ProCam 4 (or any other iPhone camera app) ... I merely pointed out it was one of many other iPhone apps (with many more to come) in addition to Lr Mobile that will allow the capture and recording of RAW image files on the current production versions of the iPhone.