I haven't seen those stories but I can tell you I've had no issues with names and passports on MU and their (terrible?) IT. Both of my children's names are too long for their system and only in one single case did it require an "extra" step before the flight. One time flying PVG-CTU the check in agent hand wrote the rest of their names on the ticket and sent us over to the ticketing counter to get it stamped. Took maybe 5 minutes (we were flying J). With your first name and last correct I wouldn't worry about it all.