He does not need to concede.
Nor is it necessary.
It is merely a formality of good sportsmanship courtesy.
this is almost a day old.
I don't know if it has been archived by anons yet.
Just in case.
This is probably why FB took down the JB_PE notation under his name.
410 in 2020 [the year]
https://republicans-oversight.house.gov/release/hice-gsa-administrator-must-adhere-to-constitution-past-precedent-in-determining-president-elect/