The only "trouble" I have had with UEFI was when I moved my wife's HDD from the old to the new Laptop (a Tuxedo btw that ships by default with some Linux). A live usb repair distro (I don't remember which one, I started from looking at SuperGrubDisk but ended up elsewhere) dealt with that quickly. She, not a computer person, is using Kubuntu for years.

Later, I got also the same laptop and moving my drive with an (fresher) install of Antergos went without any issue at all.