Yes, but there is a genuine constitutional dispute here that need to be put to bed in court. Cruz should get this put to bed one way or the other.
So does he suspend his campaign while he waits for the courts? What if a federal judge rules he is eligible but the supreme’s refuse to hear the case? What’s to stop the democrats from mounting an appeal if he wins the general. The potential exists for this not to end anything while destroying his chances... which I think honestly is the real goal. At least for Trump.