As a side note: cookie management is just A PART of RGPD, that is based on personal information. So RGPD implies to inform the user about the ways their information is used, how it can be accessed, modified, deleted and so...
French is official language of France, Belgium, Luxembourg and parts of Italy.
Reality of course is that English is (ironically) the Lingua Franca of the world.
(I was watching Iron Man 2 the other day, Tony Stark had a fairly lengthy scene of him speaking French which was quite nice)
In French it would be TUC, in English CUT. Both parties agreed on UTC because it doesn’t give either language primacy.