Personally, it feels like sooner or later something is going to majorly fuck up, but it hasn’t yet.
In my country of origin, only your first name is your legal name. You can have middle names on your birth certificate but they don’t get put on any other ID document. I honestly discovered I had them when moving to a new country. So now I have an ID and passport as but my education papers and marriage certificate are . Somehow nobody yet called me a scam.
To avoid this problem, my kid has <2 First names> . That is legal in my country of origin and where they were born… but I later learned not in my partner’s country, so my kid has two passports, one with <2 First names> , one with .
Anecdote: a Mexican guy I knew went to the US and got a visa. Went back to Mexico then back to the US again with a new visa. Apparently, between the two visas the naming conventions changed, and his US legal name got scrambled. It was a mess to prove he was still the same person… and he never really understood why it happened.