Less games would mean less injuries. Go look back at the starting QBs playing last week or the week before. That makes for bad football which means it makes for bad television. NFL is getting harder and harder to watch but add injuries to that it makes it even worse.
QBs (and players as a whole) were hurt 3 weeks ago too. The only way not have injuries is to cancel the league all together.
NFL has been hard to watch for years. It isn't any better or worse than it was 20 years ago. Well actually it's better because games are much more accessible to watch. Being stuck watching either the Redskins (when I was in VA) or the Bills (when I was in BUF) for over a decade really drives that home for me.
Short of having Favre as the QB, every team gets injured at the position every few years. It might tank the season, but that's why it's important to have a quality backup QB.