We are already long past the point of no return. He is the manifestation of a popular will. Even if he vanished tomorrow, those voters will remain.
They will not be daunted by an electoral setback. They control the Supreme Court, and will for decades. They control a majority of state legislatures -- which control how voting and districting work.
We've been past the point of no return since 2016. If you still had hope then, it should have died the same day Ruth Bader Ginsburg did. At this point it's all just telling ourselves fairy stories. It gets monotonically worse from here, and there is no longer anything we can do about it.