Yes this is only a game. However there are things you can improve and things you can't improve. No-one can predict your intentions about a match as long as you don't speak out-laud in this game. But IRL there are more than a one person effecting the results, so in match fixing cases one or more than one of those(a player, manager, directors, refs...) get caught. In this game it is only you and it is almost impossible to catch and predict these kinds of things. And at the end if you loose all your games that won't effect a thing in your leauge.
However injuries, match engine, stats, ratings are something much more easier to improve. All the games in market are being improved with patches along its user feedbacks. Even the best and most selling manager game "Football Manager" have at least 3 patches after releasing the game. People here don't complain about red packs being unrealistic or transfer system's unrealistic rules. They are mostly complaining about "major bugs" about the game play.
If I won a game 4-0 and my team has a total of 72 rating whereas the oppenent has 79; now this must be a bug. If it won't be accurate at all why the hell are there rating system?
Or this is a football manager game. It means tactics and manager actions are everthing. If I have a set-up tactic and if the result wouldn't change with regards to an opponent manager's action; what is the purpose of playing the game at first place?
There are things Nordeus can't change, but people are complaining about the things they can and should change.