The Banks themselves have to sign upto Samsung Pay so I would suggest to send them some feedback asking if and when they intend to.
I would keep Samsung Pay on your phone so it's ready for if or when your Bank decides to join up.
My Bank does allow Samsung Pay but I prefer Google Pay.
I find it more simpler to use !
i.e no having to swipe up to activate it like Samsung Pay.
Just unlock the phone and hover it over the paypoint.
Current Phone ~
Samsung Note 20 Ultra 5G SM-N9860_256Gb SnapDragon 865+
Samsung One Ui 2.5/ Android 10.