Wrong.
I'm a liberal Christian because I take the Bible seriously, but not literally. All of it. I find I can't do both. When I took it literally, there were bits I had to just completely leave on the side. Now I don't have that problem - I can engage with the whole text.
Look at it this way. Christian doctrine has three pillars: Scripture, Tradition and Reason.
Protestants generally, and evangelicals and fundamentalists in particular, emphasise Scripture.
Catholics and Orthodox (and I include Anglo-Catholic and similar "wings" within otherwise Protestant groupings here) emphasise tradition.
Liberals emphasise Reason.
Each approach has its advantages and disadvantages.
The first approach tends towards phariseeism; rules of proscribed behaviour - drinking, dancing, movies, RPGs, rock music...
The second approach tends towards a difficulty in changing to adapt to changes in society and culture.
The third approach tends towards an overcritical attitude towards Scripture and Tradition.
Hence, whilst being essentially liberal, I have more than a nod towards both evangelicalism (where lie my roots) and catholicism (whence comes my preferred worship style and my context for understanding the nature of Scripture), and I wouldn't be without them.
It's really got little to do with origins. In the UK, most evangelicals are theistic evolutionists.
Interesting point though - if you ask for a Bible verse about a given topic, the evangelical will usually find something in the Epistles; the liberal from the Gospels.