They European Union still does not have a single 230V power plug, decades after being founded. The industry has been asking for it since forever. You, sir, are an optimist.
Most of Europe already has a standard 230V plug (https://en.wikipedia.org/wiki/Schuko). It would probably be easier to get a unified 230V power plug than to change the USB-C port again after a decade.
“Until 1987, mains voltage in large parts of Europe, including Germany, Austria and Switzerland, was 220(±22)V while the UK used 240(±24)V. Standard ISO IEC 60038:1983 defined the new standard European voltage to be 230(±23)V.”