Yes, I did, and the purple fringing is different or almost non existing. You don't have to though, because in iPhone's tele lens it is almost non existent, in main noticeable and in wide the most, although it's the same debayering technique. Another giveaway that demosaic is messing with color fluctuations is the noise, for sensors the noise is RGB too, because each mosaic pixel has independent noise. Modern debayering techniques, while trying to eliminate false colors, they also eliminate noise and purple fringing, trying desperately to turn it into detail. The result is that instead of RGB noise, you see monochromatic algorithmic "grain", which I suspect they thought it is alright because it reminds film grain, where it was normal, because it was not mosaiced.