Not true. A right wing lower taxes point of view 55 years ago was to drop the top taxes on rich people from over 90% to about 70%. A right wing lower taxes point of view now is to drop taxes on rich people from 15% to 10%. And anyone who thinks that having more tax brackets with much higher top tax rates is viewed as a radical.
Fiscally I think you're correct as people's views are heavily affected by economic cycles. As the current young generation gets old we'll remember how the recession affected us as we entered the workforce. We'll also have to deal with the debt by then resulting in a more fiscally conservative electorate than we have now.
Socially, we've been consistently getting more and more liberal since the country was founded. Gay marriage is the latest example. Despite North Carolina, polls have shown that support for gay marriage is very much generational.