It seems that it depends on the interviewer. I nailed 3 out of 4 of the rounds for a FAANG job earlier this year, but absolutely bombed the system design question. I was offered one more interview round to redeem myself (didn't know they did this). Did so-so on the extra round but ended up having a fun conversation about surfing after the interviewer pointed out my surfboard in the background. I have no way of knowing but I'd like to think that my personality got me the job considering my poor performance towards the end.