There are two types of liberals, the masters and the slaves. While your statement is true of the rank and file parasite liberal, make no mistake that the leftist elites are extremely calculating. They have to be in order to control there lesseres in the political machine. Think about this, if you wanted to become rich and powerful but didn’t have the drive or ability to produce something that would make you wealthy, what more logical, brilliant, and evil way could you get it than becoming a bigwig in the rat party.
Yeah, the rank and file are quite stupid, but the leaders of their kind are very devious — just think Clinton, Obama, and their Sith overlord George Soros.
Another way to look at it is sociopaths and enablers.
It's a little more complicated than that. I'd break down the left's hierarchy as follows:
1. The leadership -- Their objective is power, they recognize the ideology is absurd -- but it is a useful means to their end.
2. The true believers -- they really believe in socialism and are intellectually incapable of realizing their error. They make for good lieutenants to the leadership.
3. The useful idiots -- the blind followers, the foot soldiers of socialism. They don't believe in the ideology necessarily, but they believe in its slogans and sound bites. Also referred to as "the low information voter".
4. The slaves -- to whom the ideology means nothing, but the goodies achieved thru accession and dependency mean everything.