I know about this workaround but changing the seperator there does not affet how excel is exporting CSV, the only working workaround is setting the language itself to english.
And thats laborious to do everytime and then set it back just to export a CSV. At the moment I just replace all ; with , in notepad++ since its the fastest workaround. But this thread should not be about workarounds but about letting Epic know that they have to fix this to support exported CSVs from other languages than english.