You may well be correct, and I actually would like to examine the process in that light further: a zettelkasten which is supporting the creation of a wiki sounds very accurate to me.
That said, I do link within the seedbox. Quite liberally, really. But I do not create chains of links, like one would expect from a “true” zettelkasten. From within the seebox, I link both inside and outside the seedbox.
This has had some surprising effects, which I have actually found pretty valuable. The result is that I can pull out a significant idea that has proven to be valuable, and that may have many links in it, even though certain supporting portions remain back in the seedbox. This might happen, for instance, with an idea that is practically valuable today, but that is supported by a number of ideas I don’t entirely understand, or haven’t been able to verify, etc…
I am including a visual from my Index note, which is pretty valuable, showing a link that is still within my seedbox. This means that whenever I view the index, I have cause to reconsider that supporting note. That reminder, for me, is often a sort of forcing-function that moves me from reading to reasoning.