What people are forgetting is what gaming is at an objective level. It cannot be pigeonholed into one type of set rules or experiences. Shovelware, hardcore, casual, all of these types offer legitimate gaming experiences for their attracted audiences who buy into them. The two reasons why we didn't have this much complaining is because 1: The industry wasn't nearly as large as it is now, and 2: The internet has evolved into a much more vocal place for gaming discussion with much more people participating in it (because of reason 1).
People also don't know how to separate gaming from thematics. On the surface, we may be quick to judge their content for its kiddy, bloodlust, overtly sexual themes, or waggle or stylus controls, but that's all they are: fluff. At the games' core, they are all still legitimate gaming interaction that have a place for the audiences they cater to. This is why ESRB exists. There is nothing in the definition of gaming that states that they must have a general audience sentiment and stray from mature/kiddy themes.
Too many people are spoiled by what gaming has traditionally been or what they prefer, and don't know how to deal with its sudden expanding toward a wider variety of audiences. Just because people complain about it doesn't mean this generation has gone wrong. People will ALWAYS complain. There are just more people now doing it.
The only thing this gen should be blamed for is a lack of quality control (primarily with Wii) and demanding game development costs like no other for PS360 games. Neither of these were a major issue in previous generations.