I don't believe that is true.
'The average number of reported 'significant' injuries to first team squad members, that kept the player out of action for at least two weeks, was 22.'
Reported Injuries Per Club 2006/07 Season - Injury Table Analysis 2006/07 Season - PhysioRoom.com
In my game I have been really lucky so far and had only 8 injuries of longer than 2 weeks. By September 25th. I am almost half way to the average number of injuries in two months when I am both very careful and lucky. FM 2011 is one long injury crisis and not much else.
Test it for yourself. Count up how many injuries longer than 2 weeks you, or any other team has in a season. In the game I'm playing Arsenal has 11 player out now. West Ham has 10, Fullham has 10 etc. Entire first 11s are out injured. This is not normal.
FM 2010 seemed OK. I seem to remember thinking about tactics and stuff, instead of just injurys. FM 2011 should be renamed injury manager 2011. That is what the game is about, managing injuries.
When fm 2011 first came out I remember it had stupid amounts of cards given out, like 20 per game, making it unplayable. Well now it injuries that are dished out by the dozen. It is way OTT.