The e-ticket pictures for the two stolen passport travellers are not from genuine tickets, it is just a printout from some reservation system. BUT IT DOES NOT MATTER.
The e-tickets with those ticket numbers are stored in the global reservation database and can be retrieved by anyone from WWW (yes anyone). The type of printout is not relevant.
The tickets were issued in Pattaya.
Flying on a stolen passport to the EU is very naive. On arrival on a CSZ flight in Amsterdam the passports would have been identified and the holders be retained.
Appears to me the two travellers never intended to get to AMS.