Most likely the SCOTUS doesn't have the courage to send the certifications back to the states.
About the electors, their seating of the fake president was based on fraudulent results.
The electors, the state legislators and the voters all have had the constitutional rights abridged by fraud.
Yup—this is like demanding that bank robbers return the loot to the banks.
They are gonna laugh at you from their hide-outs....and proudly proclaim to anyone that asks:
I dindu nothink!