Well I guess that’s a loaded question, not everyone has had issues with brake rotors from previous years so I don’t see 2019 being any different, as long as you observe the bedding in procedure the warranty Kia offer should take care of the rest.
IMHO, pull the trigger & enjoy a great car....we all have & are, hope you get a great deal...
I have 5000 miles on my baby and tracked the car for the first time in central Florida and let me tell you there is no problem whatsoever mine is a 2019.