The workflow for RAW is just as terrible as the workflow for FHD/4K video on the devices, which is incredibly disappointing.
Drag a DNG out of Apple Photos on OS X, and you get... a JPEG. Want the DNG? "Show Contents" and dig for it or go to iCloud.com (on your iMac, mind you) and download it from there. There doesn't seem to be any really good RAW support in Photos on iOS and there is no indication in the app which Photos are RAW and Which are JPEGs).
It's like no one at Apple actually used the devices for this. They just threw some stuff together to tick off a few more feature boxes.
Still the worst smartphone platform on the market for Photography/Videography workflow.
I feel like I'm using a cameraphone marketed towards professionals, but designed for people with a mental handicap.
EDIT: Does anyone know if iPhoto will Sync the RAW images from the iPhone to the Mac?
You do realize that this information you're quoting is virtually worthless, right?
The issue isn't that they aren't there, it's that they're "practically inaccessible" on the device.
You cannot get the 1080p or 4K Video, or the DNG RAW files out of Photos unless:
1. "Show Contents" on the Photo Library and crawl through it until you find the specific file you need, or
2. Go to iCloud.com and download from there.
Additionally, getting them from iCloud.com is cumbersome because you have literally no indicator which file is RAW and which file is JPEG, which is an issue if you're shooting RAW+JPEG. So, you have to Get Info on every similar pair to pick out the format you want.
The issue has nothing to do with whether or not the system downloads them. It does, but they're basically still locked away in a box and not easily accessible (so much trouble, that it isn't worth using it at all). I've already posted on this issue regarding video, in the past. I wouldn't be surprised if you replied with the same quote...
Unless you can show me a video of you dragging a DNG, 1080p or 4K video out of Photos to your Desktop (or another folder in Finder); in which the software doesn't automatically transcode/compress it to JPEG or a 720p video, nothing in that quote is of use in this situation.
I don't bemoan the enthusiasm to help; but if the solution was that trivial, this would not be a concern at all. I do know how to read.
Tip: You cannot, so don't bother. IT works the way I say it does. Drag a DNG out, it becomes a JPEG. Drag a 1080p or 4K video out, it becomes a 720p video. Need the original? Crawl through the Library (good luck with a large library), or download from iCloud.com. Really no point even downloading originals at all, to be quite frank.