That does describe a few ideological liberals, but not the average day liberal

The supermajority are superstitious in the literal sense of the term, they don't understand the foundations of their own ideology in the first instance to even feel threatened by the technical arguments of Marx, if they read his arguments without his name presented, they could understand it easy enough, but wouldn't be able to detect the implications that devastate their ideology

What scares average liberals about Marx isn't his ability to dissect capitalism (they don't even perceive that as a possibility) what scares them is unknown moral and social contamination, it's a fully realized religious fear that something about THEM PERSONALLY, not their ideology they don't even understand, will be altered and destroyed by reading him

Ideological liberals on the otherhand, at least the smart ones, have a rational fear of OTHER people reading Marx, because just chapter 1, section 1 of Capital can blowtorch half of the anti-marxist soundbites Ideo-libs propagate reflexively