Of course there was massive fraud. But if we couldn’t/didn’t deal with it with a GOP President, Senate, and various involved state legislatures, governors and secretaries of states I don’t see how it gets dealt with in the future.
Trump needed to pull the switch a month ago on his executive order addressing foreign involvement. He didn’t do it.
I do think there will be an effort to get Biden for this, even if Trump doesn’t want to sully himself over it most of his supporters rightly do believe the election was illegal.