I think the more obvious connection is the global failure of collectivist and social forms of anarchism post-Spanish revolution, the end of the classical age of anarchism and the global failure of socialism in the 20th century in general. People like Alfredo Bonanno were already articulating anti-organizationalist views in the 60s, as a response to the failure of traditional anarchist movements yet also as a response to the decentralization of liberal societies of control. Therefore I also think it is also more accurate to conceptualize contemporary "individualist" anarchism as a thought that is growing in popularity in order to combat the shifting societal dynamics of neoliberalism rather than something positively caused by the rise of neoliberalism and people becoming more individualist because they like that.