The other way to get rid of the Republican Party is for people to stop voting for Republicans and start voting for people who are solution-oriented.
If all the people who thought Trump couldn't win had voted in 2016 instead of apathetically refusing to participate, he wouldn't have won.
It isn't just Republican ignorance--which we can do little about--it's apathy on the part of so many "thinking" people who can't be bothered.