I'm not sure what your point is. That sentence is entirely correct with reference to the conspiracy theory - there's no actual conspiracy or "intellectual tendency" to conspire along the posited lines. Marxist cultural analysis is a rather different animal; to be sure, there are genuinely weird interactions between it and e.g. radical Maoist politics/worldviews which push some proponents of either towards an ideological extreme that's somewhat reminiscent of the 'Cultural Marxist' claims ("Destroy the Four Olds!") - but even then, that's a random/contingent political equilibrium; not a willful conspiracy or even a well-defined "intellectual tendency".
I think the point is that these articles don't prove anything of the kind. The first one "examines the ways in which Cultural Marxism has moved from the ‘fringe’ to the ‘mainstream’", paying "particular attention to the localised use of the conspiracy in the ‘Safe Schools’ controversy of 2016–2017, whereby Cultural Marxist tropes were imbued with local concerns about sexuality and gender issues". The second one "argues that “Cultural Marxism” is an antisemitic conspiracy theory", focusing "on three of the main proponents", and shows that it "misrepresents the Frankfurt School’s ideas and influence", the latter not being obvious from a quick reading.
Scholarly analysis of the conspiracy theory has concluded that it has no basis in fact and is not based on any actual intellectual tendency.[5][7]