I have found Why is exfat greyed out in gparted? in which it is stated:
For GParted version v1.2.0 and above (Ubuntu 21.10 and above)
exFAT support was added in version 1.2.0 of GParted.
Is there any backported support to LTS for the ability to resize and add partitions to an exfat device (in this case, a CFExpress card accessible through USB -- the gparted in 20.04 can "see" the card, but not manipulate the exfat filesystem)?
