I was one of those bemoaning the game at first but I'm now 6 months and many hours into my first season and really enjoying the game. Can't see any of the bugs mentioned like high scoring, injuries and player unhappiness.
It helps that I've created a realistic setup with many leagues all playable across the world totalling 130,000 players with my league and all international competitions on full detail. It also helps that I try and stick to realistic formations and tactics. I also have atribute masking on and I only sign players from the ones recommended by my scouts or other staff.