That depends on what one means by “globalization.” Free trade solely among and by giant corporations that are themselves the result of massive state intervention in the market is not what market anarchists advocate. Market anarchists don’t support additional restrictions on trade, and at least wouldn’t oppose genuine liberalization of trade — but, more importantly, market anarchists support removing the massive framework of state subsidies to politically-privileged monopoly capitalist enterprises which forms the whole context “free trade” occurs in right now.
For example, if “globalization” is a euphemism for subsidized American agriculture getting access to developing world markets where they can dump their surplus at a loss and create a dispossessed labor market which will flood urban centers and depress wages, we tend to think anti-globalization people are justified in opposing “globalization.”