Breakers which require additional setup are hard to use, especially if it's card slots and/or influence you probably didn't want to use or installs you didn't want to make early. There's 6 cybernetics currently legal. Each of these is unique, costs at least one self-inflicted damage, $0-2, and the three imports cost 2-4 influence to Criminals. This is a lot of work to get a fracter running and expect to pay a $1-2 premium on Paperclip at least a few times before you have multiple cybernetics in play.
Might see niche-within-a-niche use in Nova, which has fewer problems with unique cards (seeing as it can only run single copies anyway) and influence. However, a Nova that isn't on conspiracy breakers might lose some critical cards on self-inflicted damage. It would not be great if an unlucky Snare or SDS score or cybernetic damage forces you to draw wildly for recursion.
I think this analysis is about right, I run it in startup with Marjanah as you describe, with mixed results! Not always worth installing over Marjanah depending on the opponent/board state and I like the combo as Marjanah is the polar opposite - the cheapest thing in the world to install/start using. I suspect in bigger cardpools you're less likely to be wanting the cybernetics - the breaker's not so good you'd take the cybernetics just to use it but if you run a load of them anyway then as soon as you have 2+ installed it gets really good
— JonnyRaa