I hope it's fine to open this bug here even if 'GPG' command is indeed from GnuPG 2.2.28 that is packaged with Gpg4win 3.1.16.
In next comment I'll enclose a bitmap showing error message in Italian but lacking 'è' Italian accented letter.
Anyway, the correct expected error message in Italian should have been 'l'opzione "--ver" è ambigua' (unquoted)