@Demosthenes take a look here :
@Demosthenes That is a good question. I use web clients mostly -- Pinafore most of the time, running on a Browser window.
I do believe the excluded languages would be stored as a user preference, and the server would not send content to a client with that language.
But it's worth trying. I would also suggest looking for the Fedilab Lite version, at F-Droid.org, as it is lighter on resources use.
Good luck! :)
@design_RG
Thanks! I use the Android app Fedilab. If I change that setting in a browser, do you know if the change would persist into the app?