Not GP poster but the contradiction is Apple (wants to be) serious about security. Thus, Apple will pay for (certain kinds of) bugs. Corellium is used to find bugs. Apple is trying to shut down Corellium.

This move by Apple seems to contradict the notion that Apple is serious about security - how are researchers supposed to find bugs without this?(a successful lawsuit would also set precedent that no US entity could run a very similar service)

Sure, there's workarounds (eg buy a pile of iPhones), but why is Apple making it harder to secure their product?