default or selected kernelversion does not have config value CONFIG_EXFAT_DEBUG_MSG.
Result is shown for kernelversion 6.9.8

print debug messages

configname: CONFIG_EXFAT_DEBUG_MSG

Linux Kernel Configuration
└─>Device Drivers
└─>Staging drivers
└─>print debug messages
In linux kernel since version 5.4 (release Date: 2019-11-24)