Trump needs to fight this all the way, if for nothing else, to drive home how messed up our electoral systems and the media bias.
Even if it doesn't wind up giving Trump the election, putting that information out there, will weaken Biden's Presidency, and set up the eventual downfall of the Democrats and their partners in the media.
You have a lot of people who don't even like Trump, beginning to see the light. That means, eventually this could blow up into a full-blown Resistance Movement, encompassing people from all political beliefs, who all see the common enemy. Ultimately, that's what it will take to change things, it cannot be just from "the Right".