[anigbrowl]

adding more language tracks, something Netflix has been doing for years

Netflix doesn't do that. Producers pay to have that done or take the language track in part-payment from an international distributor who pays to have it done. Also dubbing in new dialog is way easier because you replace existing dialog, you're not trying to fit in around it.

[bgruber]

When I say that it seems no harder than adding more language tracks, what I'm talking about is adding pre-existing description tracks to Netflix. Of course producing new description is harder than adding existing language tracks.