Meh...I could find the exact same paragraph written by someone (fan, writer, etc) in 2005, in 1995, in 1985. People have been writing about the demise of baseball for more than a century, with just one problem. It has never been true.
The game changes. Any one person may not like some of the changes at any point in time, and we all tend to (a) look for patterns that support what we personally believe (b) anchor our opinions based on the most recent information we receive.
Personally, I enjoyed baseball during the "steroid years" more than I have at any other time. Without getting into the ethics of PED use, I will say that I found the game during that time to be the best it has ever been. The years roughly 1994-2007 were incredibly exciting, and frankly I wish scoring and levels of offense would get back to that level. But that's just a personal preference, and it's not at all clear that the majority of the baseball-viewing public agrees with me.
I get to about a half dozen games a year...attendance is usually very good, including (despite what we are led to believe) a ton of young people at every game.
Check out MLB attendance per game records here:
http://www.beyondtheboxscore.com/2014/2/10/5390172/major-league-attendance-trends-1950-2013
Over the long run, it always goes up. There are short terms blips (such as following a strike), but it always comes back. If there is anything other than anecdotal evidence from a handful of disgruntled fans and writers, it sure is not showing up in the data.