Life gets weird when you don't do your research up front . Canon advertises the M50 for its RAW CR3. on the grounds that the RAW3 file size is smaller. Marketing nonsense. File storage is not the limiting factor for Camera use for the last decade. Storage is cheap by any measure.
What Canon is doing is following the marketing trend of al things wireless and and on portable devices. For Mac users that means iOS (iphone and ipad). Some people want to play on portable devices, but that is not for everyone. For myself, I'm certainly not going to edit on an ipad. I have a MacBook Pro for that.
There is a work around and it goes like this: install Canon's DPP4 (Digital Photo Professional 4) for High Sierra. (Not available for Mojave). Open the RAW3 in DPP 4 and save in tiff to your computer's file storage system. In a test run, a 23 MB RAW3 file turned into a 192 MB file, but at least now I don't have to edit in jpg. Did I say in the first sentence that "Storage is cheap by any measure?"
While I generally like the M system for its size, its ease of use, and portability, I have paid a considerable price in post-photo processing by not doing my research before I bought the thing. I fell victim to marketing hocus-pocus.
Sure, I hope Affinity comes up with a desktop version of processing CR3.