Is liberalism becoming more anti-intellectual?

[Cassandra]

I think it depends on what you mean by liberalism.

The anti-GMO, anti-vaccine crowd, that also tends be into horoscopes and "crystals," are a discrete group whose politics vary from liberal to non-liberal left to entirely apolitical beyond their pet issues.

I do think there is a widespread cultural shift against intellectuals which is not contained to the right (though is certainly most vocal there). People with graduate educations come disproportionately from wealthy backgrounds and go on to make much more money than the average American. People from outside this elite tenth or so of American society have barely treaded water since the Great Recession. Meanwhile, they watch as the professional/upper-management/intellectual class have gained significant wealth (largely on the back of an ever buoyant stock market).

I think the anti-science/anti-rationality movements that have gained a foothold among certain more left-leaning sectors is directly connected to the divergence in wealth accumulation we have witnessed over the past decade. There are a great many people who feel they have been left behind: those who went into debt for a bachelor's degree which has not led to financial security, those who are still living in small towns as wealth concentrates in the major urban cores, those whose have slowly been rebuilding their household wealth to 2006 levels after the housing crash set them back a decade, etc. etc.

For people in that position, is not difficult to see how resentment at the upper class's leap financial leap forward over the past decade could spill over into disdain for those institutions and ideologies that the same upper class holds dear. For better of worse, science itself is distinctly tied to the values of this upper class, whose world view I would term "liberal" in opposition to how the OP uses it. Liberal-left readers who come from affluent backgrounds may be surprised at the number of young people from working class backgrounds who have discarded the college dream and are instead looking to learn trades, get CDLs, or whatever other hustle can guarantee decent money. Tied to that decision is a deep-seated disdain of the college system (a "scam" that unlucky older siblings have emerged from weighed down by debt) and a concurrent dislike of the kids who can afford college, along with their world views and the cultural signifiers attached to them.

I believe the "anti-GMO, anti-vaccine crowd, that also tends be into horoscopes and 'crystals' crowd," as I called them earlier are intimately connected to the Trump phenomenon on the right. They represent a similar anti-liberal, anti-establishment, anti-upper class movement that emerges (partially) from material conditions. However, rather than channeling their dissatisfaction in white identity politics like Trump voters, these folks have chosen to fixate on issues that are closest to them; that is, the health of their kids. Their errors are besides the point. They represent one slice of a larger movement. That movement encompasses the right-wing revolt, but is of course distinct from it due to the lack of racial animus. This groups kin is not nearly as political organized as its right-wing equivalent, though elements of it can be found in formations like the DSA (though the DSA is not entirely representative of this group, saturated as it is by Marxist professors and graduate students).