This is not necessarily related to the charges,
In that sense, Ghosn asked for understanding that high salary was a global standard, but he still uses the structure of Japanese society that would not be accused of making a donation.
In Japan, it is difficult to prominently save money at the expense of individuals not having to donate.
This is inherently incompatible. But Ghosn is behaving conveniently. It is natural to be criticized for greed.