At the same time, metadata collection via a gag-ordered pen register on Signal is still possible in principle, this would just make it slurpable by existing pri

At the same time, metadata collection via a gag-ordered pen register on Signal is still possible in principle, this would just make it slurpable by existing prism type tools potentially already operating on iCloud. Those truly concerned with metadata should go to Tor, and not use signal, independent of this feature. I expect this is another case of UX/Security tradeoffs considerately made by OWS. Having native OS integration is nice, and probably the right answer for most users.