You're right that this is confusing.
"Zero data loss" means system-level guarantees (no corruption from network failures, crashes, etc), not that concurrent edits to the same field are preserved. LWW definitely clobbers one of the edits.
What v0.1.0 does give you is field-level granularity (edits to different fields don't conflict) and guaranteed convergence (all devices reach the same state). But yeah, same field = last write wins.
The Rust core already has better CRDTs (Text, Counter, Set) that handle concurrent edits properly. They just need to exposed in the TypeScript SDK for v0.2.0.
I should clarify this in the docs. Thanks for pointing it out.