100% agree with this. I’ve always used LineX, but got the factory liner on my ‘19. LineX is thicker, more durable and they spray more areas to give better coverage. The factory liner is sprayed over the bed bolts, corner tie downs and right up to the box link plates. When I added the Built Right molle panels, the liner peeled when I pulled the box link plates and corner tie downs; underneath, the paint wasn’t prepped for the liner (3M scuff like LineX does). At the back of the bed, LineX laps over the sides as well as on the tailgate, where the factory liner leaves paint in a high use area, and it gets scratched. The factory liner isn’t any cheaper to install; the only plus is the Ford emblem at the front of the bed. LineX won’t spray over the Ford liner to cover the missed area.
Go LineX and get your wheel wells and skid plate done while you’re at it.