Partially, yes. Trump convinced many Georgians not to bother voting in the runoff, and Team Trump let the scumbag Democrat shyster lawyer Lin Wood speak for them and appear at "rallies" where he repeated this "warning."
You are telling it wrong. People were demanding that something be done about the theft of the election. When both Senate candidates ran away from the issue, people decided that if you won't fix the election problem, they were going to lose anyway, so why bother voting.
People were serious about trying to get something done to address the stolen election of 2020. When the party wouldn't do anything, a lot of people said F*** em.