Preface by saying, followed this sub forum since joining, and the number of times a/the Hun/Kia tsb regarding using non OEM filters I think more than I can count on two hands. Imo and in my observation, non OEM filters an easy target for that highly touted Hyun/Kia vehicle warranty. Sight unseen, my 'speculation' would be the topic oil filters are fine, good to use. I might sacrifice one to cut open and take a peak. If you're so inclined, post a c&p for further comment. My .02
As a related aside. Motor Trend has a couple of recent articles on a new Kia K4 in their stable. The most recent, deal with getting it serviced at the dealership. Not going to link, but both by Aaron Gold and the latest dated 7/2 on a dealership oil change cost and it links to his previous dealership experience. Imo, both articles worth the read.