Thankyou for your explanation: still one question though.Short answer: No
Longer answer: NFC payments are disabled by default on custom roms
Even longer answer: Nfc payments CAN be enabled on custom roms, and should be supported, but since no-one has gotten Magisk working yet, then unfortunately no.
You can use Magisk hide to hide fact that you have rooted phone, that way NFC payments start working. You also have to fix build.prop file
Are NFC payments disabled because of root or custom Roms in general?
I mean, if I install LOS but I don't install Magisk (as I don't want to LOS to root the phone but just to extend its lifetime with security updates) are NFC payments disabled even if safetynet test is OK?
(e.g. I have this situation on an S5 mini - LOS 14.1, SeLinux enforcing, no Root, safetynet Check passed: NFC is working but can't make any payment, probably due to missing security chip - as per bluebite(dot)com(slash)nfc(slash)android-nfc-compatibility).