You think the devout ones think they’re good?
Probably the opposite, dude.
The religious aren’t as obtuse as Internet randos suddenly given a voice may lead you to believe. Even those who profess reincarnation believe we only get to experience this life and serve our purpose once. May as well make the most of it.
I feel your pain. It seems these apps have been built by monolinguists, and the language preference/requirement you mentioned are more of an afterthought than, for example, quality/resolution preferences.
For subtitles, at least, a bilingual family needs to have two separate instances of bazaar.
Of course, that’s less than ideal when you start talking about two entire video files when all you want is an additional audio stream.
I’ll be checking back here hoping you’ll find a solution.