What I don't get is how the feature works. I see it for veeery few videos and those are usually highly profitable clickbait and/or big budget productions, so my assumption has been this is actually something the uploader has to enable or even fill out. My language is very "small", so it makes sense that only the broadly-popuar and highly-profitable would be worth translating the titles for.

Unfortunately, all the translations are machine-translated garbage and there is no setting to turn this off as a viewer, so it's just incredibly annoying.