Insider risk is the #1 risk to data privacy and none of your "robust" open source pieces of junk has got any kind of insider protections. There's going to be some slob somewhere with an EFF sticker on his laptop and the root password who is leafing through your daughter's files looking for nudes because he's a "loli catcher" or some other form of pervert.

The risk model where American intelligence courts are the top line item is stupid.