By compatibility he likely means that exFAT is supported by Windows and macOS which means allowing the usage of exFAT will facilitate easy exchanging of external storage media between systems.
Also by spec SDXC cards come formatted as exFAT filesystems and this change means Linux can now be compatible with them without requiring reformatting them with another filesystem.
Also by spec SDXC cards come formatted as exFAT filesystems and this change means Linux can now be compatible with them without requiring reformatting them with another filesystem.