They probably desperately want to get their hands on the constitutional issue, but desperately want to avoid becoming politicized.
Not only that, but considering their “ripeness” doctrine and so on, I would think that even in relatively clear cases of ineligibility, the SCOTUS might not get involved until after that candidate wins. And, if that was how they viewed “ripeness,” then I don’t know if they would say the matter was ripe when he won the election or when he was elected by the Electorol College.
IOW, the Court will not want to be doing this for every joe who runs for prez. It only gets really serious if the guy wins, either the nomination of a major party or the election or the Electoral College vote.
Regardless, the point is that right now they have a guy with potentially considerable questions about his eligibility and he WON. If I were them, I’d be looking for some *legitimate* (not activist) way to grab these facts and get it addressed.