Judicial elections are barely even elections. Independent voting guides never mention them and news media rarely profile or interview them (or if they do it’s not prominently compared to other local races). Plus at least in my experience incumbent judges usually run unopposed. I also think they have very strong restrictions on what they can/can’t say while campaigning so voters can’t even do their own research properly (especially for new judges, who don’t have much of a track record). Basically it’s near impossible to be an educated voter when it comes to judges, so maybe they’re better off being appointed.