It looks like they now offer the option on some content, but it automatically defaults to English and you have to manually turn it off each time. That's a step in the right direction at least.
I think it just defaults to the user's OS language (iOS, browser). Fortunately once you turn it off (or set it to another language) - that setting will persist so you don't have to constantly change it back.
I flip pretty frequently between Chinese and English subs and it'll remember the last setting between episodes / shows / etc.
