I personally think Land is worth reading (critically), but to say he cooked his brain with methamphetamines is a vast understatement. I agree that there's not much to learn from him on cybernetics specifically: he's sort of "post-cyber" (in the same sense as post-Marxist), musing on the philosophical implications of cyber-positive feedback loops (including but not limited to Capital/AI), before veering off into explicitly anti-human negentropy-maxing (accelerationism). Whether shrugging off potential human extinction is more or less vile than his far-right political turn and extremely naked racism, you can decide for yourself.

For similar ideas on cyber-positivity without the insanity, I'd recommend Michael Downs' "Capital vs Timenergy" (soon to be republished as "Capital vs Subjectivity"), and Poliks & Trillo's "Expocapitalism" [0].

[0] https://becoming.press/exocapitalism