[jshen]

If the primary user concern is "all data is public", then the utility of ATProto is extremely narrow and will likely lose to something with a different philosophy.

[psionides]

That is about to change very, very soon though: https://dholms.leaflet.pub

[inigyou]

Or you just use a different protocol for private stuff. Square peg, square hole. Round peg, round hole.