Yes, he was a train-wreck, but he also came a few percentage points away from winning.
So WTF, half of Georgia's voters!?! I'm glad that Warnock pulled it off, but it is shocking how many people were willing to vote for one of the worst Senate candidates from a major party there has ever been.
ADDING: Similar point from LGM:
If we want to be pessimistic about things, we can focus on the fact that Herschel Walker — an almost indescribably terrible candidate by all conventional metrics regarding qualifications, such as being able to read, knowing the difference between the House and the Senate, not coercing the women he was beating up into abortions etc. — got almost exactly the same percentage of the vote in the runoff (48.6%) as the two other most recent Republican senate candidates (Kelly Loeffler, 49%; David Perdue, 49.4%).More optimistically, this was 2022 not 2020, and the other Republican statewide candidates for governor, attorney general, and secretary of state all got between 52% and 53% of the vote, suggesting strongly that Walker’s absurd buffoonery of a campaign cost the Republicans about 4% of the vote, i.e., a deplorably small but ultimately decisive margin. Note that these other candidates were standard issue reactionary middle aged white guys, who kept the MAGA rhetoric mostly tamped down, didn’t seem to be severely brain damaged, and didn’t have a long line of women claiming that they had forced them to have abortions after beating them up and so forth.