If you let Democrats turn most of the red states and red Congressional seats blue because you said fuck it and you aren't going to vote again, then not getting Congress back in 2022 or the presidency back in 2024 will be the least of our problems.

A supermajority in Congress and the state legislators can amend the Constitution, and that's exactly what power you will give Democrats if you stop voting because they sure as hell won't stop voting. In fact, some of them are probably here posing as Trump supporters and saying they won't vote again because that's what they want you to do while they continue to vote blue themselves.

Some of the bullshit new Amendments you can expect Democrats to put in place if they get the supermajority they need would be a repeal of the Second Amendment, getting rid of the Electoral College, so the president is elected by popular vote, and changing the First Amendment so you can go to jail for what they consider hate speech. Imagine going to jail for misgendering someone, making "back to the kitchen" jokes, or criticizing Islam.

They may even go for broke and remove the natural-born requirement for the presidency, so someone like Ilhan Omar can become president.

TLDR, don't stop voting.