The Supreme Court can’t rule on the one without the other.
As for insurrection, the 14th amendment does not apply to the president, it carefully limits him out. Roberts has already ruled that the president is not an officer of the government.
“The Supreme Court can’t rule on the one without the other.”
Sure, they can. They can ignore the question of insurrection and declare that regardless of insurrection the 14th never applied to the President and was also repealed twice.