CNN is politically center enough. Certainly moreso than whatever the hell he’s citing, if anything.
You could show him a Snopes or other fact-check article but he’ll dismiss that as Leftist, too.
You could find center-right publications like the WSJ or The Hill referring to Biden as President-elect, but not sure if any of them have done a thorough debunking.
I think it’s sufficient at this point to generally note that Trump got every recount he was entitled to, that all 50 states certified their election results, that Team Trump lost 50+ court cases and the couple they did win were on insignificant issues, that SCOTUS rejected the couple challenges that it handled 9-0, and that the Electoral College cast its votes making Biden the President-Elect and there is no constitutional procedure at this point to undo it.
You don’t owe Bluessol the time of day. He’ll never be convinced of anything, no matter what you do. That is the nature of conspiracists.
I think ImgFlip should ban the airing of the “Trump won” conspiracy at this point, since it’s dead as a doornail he lost, but I think it’s more likely they’ll permit it as long as those airing it don’t *explicitly* call for violence, even though that is Trump’s only real option now.