Land himself has suggested a very anti-human solution to the problem of "IQ shredders":

"The most hard-core capitalist response to this [IQ shredders] is to double-down on the antihumanist accelerationism. This genetic burn-rate is obviously unsustainable, so we need to convert the human species into auto-intelligenic robotized capital [a]s fast as possible, before the whole process goes down in flames." [0]

[0] Nick Land (2014). IQ Shredders in Xenosystems Blog. Retrieved from github.com/cyborg-nomade/reignition