You'll notice
Useful2 Signal3
Document artifacts no longer describe themselves as commentable; sheets and slides still do.
What's wrong with this entry?
Anonymous. No account, no email.
What
Sheets and slides still describe themselves as commentable; documents no longer do. The doc description drops "and comment on" and now says the team can read and edit in place, and the separate text about a live editor with commenting wired up was removed.
Evidence
published for the team to read and edit in place
Strings lifted out of the shipped bundle, so the claim above can be checked against them.