There is one problem, if I have a film with a visible colour cast I don't like, I use another film next time. Cost ranging from 0.75 Euro for the cheapest C41 to some 15 Euro for the most expensive E6, add another 3 to 5 Euro for processing.
You can have a faulty film or the lab may make an error, I just got back a roll EB-3 which has, drum roll, a strong magenta cast 🙂, the other 9 rolls from the brick are fine and where developed in the same lab but a couple weeks earlier.
Again, not much of a problem, I lost a couple shots which aren't worth to be rescued anyways.
But with a camera which might be used in jpeg without postprocessing just like I use slide film and which has a magenta cast in every picture including synthetic black fabrics, and may be green foliage as some reported, and streaks and ghosting won't tempt me much.
After all, how many people here claim that film is easy to use and does not need any postprocessing? Leica just proofed that those are right, want to use your Leica lenses to the limit? Buy Portra!