I believe it is better to change from GOP to Independent.
Make the GOP wonder about the voter’s intentions.
There are 14 states and the DC with Closed Primaries.
https://ballotpedia.org/Closed_primary
If a person resides in one of the Closed Primary states, they can change their registration back to GOP in order to vote in the 2022 primary election. A person would only need to change back to GOP if there were some strong conservative candidates challenging incumbent RINO’s.
Or Libertarian, they hate the 2-3% Libertarian voters get as it's usually the margin of their loss.
Agreed don’t stop voting just leave the party then let them wonder why their small donations and voter turnout numbers are abysmal