Earlier quoted context omitted.
AI bots try to behave as close to human visitors as possible, so they wouldn't click on 0px wide links, would they? And if they would today, it seems like a trivial think to fix - just don't click on incorrect/suspicious links?
Ideally it would require rendering the css and doing a check on the Dom if the link is 0 pixels wide. But once bots figure that out I can still left: -100000px those links or z-index: -10000. To hide them in other ways. It’s a moving target how much time will the Llm companies waste decoding all the ways I can hide something before I move the target again. Now the Llm companies are in an expensive arms race.
Modern bots do this very well, plus the structure of the Web is such that it is sufficient to skip a few links here and there, most probably there will dxist another path toward the skipped page that the bot can go through later on.