Have we become...?
No, only because we always have been.
Nostalgia is a funny thing. As the aged look back fondly on better times, they seldom realize how much editing they have to do to make them better times. I'm reminded of a book I read years ago, called "The Good Old Days... They Were Terrible!"
For example, think back to the 50's. Oh, what innocent times. It's like Leave It To Beaver and Pleasantville all bundled up into one little joyful decade... wrong! This was the McCarthy era, people everywhere pointing their fingers at one another screaming "Commie! Treason!" while the KKK's lynch mobs were the norm, and don't forget we went to war in Korea and threatened it with Cuba.
The gap between the undeserving rich and the righteous poor has always existed, and it always will. You're right, those who become exceedingly wealthy are often the wrong crowd, while those who deserve it get the short end of the stick. But, as they say, life's not fair.
And as for ignorance itself becoming culture, that's a whole 'nother story. I do believe that we, as a society, are becoming considerably less intelligent. I think its roots are in the advent of broadcast media, and it's marked by a change in our way of thinking. Back when people used to read books (remember books?) as a way of life, thinking was linear and logical; one idea led to the next, and the next idea was dependent on your understanding of the first. Now, thanks to TV and movies, thinking has become sporadic and random; TV would lose its audience if it expected you to have any prerequisite knowledge, and if it paused for a moment to reflect you would change the channel to watch something completely different.
Meanwhile, that same media has people convinced there's such a thing as "A.D.D." and the solutions to this problem are drugs marketed by the program's sponsors. It's disgusting.
I can go on about this for a while, but in the distance I can hear the notes of the "wrap it up" music wafting my way. If you truly have an interest about ignorance itself becoming culture, I strongly recommend the book "Amusing Ourselves To Death" by Neil Postman. I will say, though, that this book was written pre-internet, and I think that thanks to the internet, society has begun (if only barely begun) to bounce back from its plunge into ignorance.