matrix: consider the matrix-public-archive behaviour, back off on distruct

Resolves: #337

pages/matrix.markdown

@@ -142,20 +142,7 @@ They are related to bringing Matrix to other protocols or vice versa.
 The public/world-readable history visibility option means exactly what it says,
 public even without joining the room. These rooms are accessible to tools
 such as [Matrix Static](https://view.matrix.org/) and its successor [Matrix Public Archive](https://github.com/matrix-org/matrix-public-archive)
-(aka `@archive:matrix.org`) and thus their history is visible in search engines. If this isn't what you
+(aka `@archive:matrix.org`) and thus their history is visible in search engines.
-want, set history visibility to one of the members only options (since
-selecting this option, since being invited or since join).
-
-Additionally [Matrix Foundation considers members-only history as public and will show it to anyone through archive.matrix.org](https://github.com/matrix-org/matrix-public-archive/blob/main/docs/faq.md#why-does-the-archive-user-join-rooms-instead-of-browsing-them-as-a-guest). Thus if you have a semi-public room on Matrix, you should follow these steps:
-
-- Set your room history visibility to "since user joined the room" or at least
-  "since the user was invited".
-- Set the room join rule to `knock` or `invite` -only. If you really need to,
-  you may also use `restricted` or `knock_restricted`, but be careful to not
-  allow access from public rooms (although this will still protect you from
-  matrix-public-archive).
-- Consider enabling end-to-end-encryption while it's generally not adviced for
-  public rooms.
 
 Note that as the option name hints, the history visibility option will not
 apply to previous messages. Thus if you first make room public and then
@@ -173,9 +160,12 @@ and related issues.
 It depends.
 
 You can try [Matrix Public Archive](https://github.com/matrix-org/matrix-public-archive/), e.g. for Matrix HQ [archive.matrix.org/r/matrix:matrix.org](https://archive.matrix.org/r/matrix:matrix.org)
+or [matrix-archive.evulid.cc/r/matrix:matrix.org](https://matrix-archive.evulid.cc/r/matrix:matrix.org)
 omitting the leading `#`.
 
-_If you too consider that undesirable, you can [join us at matrix-org/matrix-public-archive#47 requesting the ability to opt-out](https://github.com/matrix-org/matrix-public-archive/issues/47) and ban `@archive:matrix.org` from your rooms in hopes that it will be enough._
+\_Until 2023-06-27 [Matrix Foundation considered members-only rooms as public](https://matrix.org/blog/2023/07/what-happened-with-the-archive#a-note-on-shared-history-visibility)
+so some outdated or patched archive instances may still reveal information.
+[Method to opt-out is still not in sight.](https://github.com/matrix-org/matrix-public-archive/issues/47)
 
 Alternatively if the room in question has an alias, you can try poking the room directory API e.g. for [#matrix.fi:matrix.org](matrix:r/matrix.fi:matrix.org): [https://matrix-client.matrix.org/\_matrix/client/v3/directory/room/%23matrix.fi%3Amatrix.org](https://matrix-client.matrix.org/_matrix/client/v3/directory/room/%23matrix.fi%3Amatrix.org), you get the room ID and list of homeservers in it and if you see a single user (or otherwise not so popular homeserver), you can make educated guesses on who may be in the room. Note that this particular link requires `matrix.org` to be in the room and aware of the alias.
 
@@ -602,9 +592,14 @@ Matrix has a place in my heart, just as IRC and XMPP and while none of the three
 get resolved and the fighting between them to end and I am tired of the "stop having fun" or "you are worse person for still using deprecated IRC"
 or "I wish IRC/XMPP just died already as it's so old" or whatever attitude I see amongst certain Matrix user/enthustiastic groups.
 
-However I admit having increasingly difficult time believing that either _Matrix
+However I admit sometimes having difficult time believing that either _Matrix
 Foundation_ or _New Vector trading as Element_ has their users best interests
-in heart.
+in heart. On my worse days, I especially hardwordedly criticse [media never being removed](https://github.com/matrix-org/synapse/issues/1263#issuecomment-1120225193)
+or [fear that Matrix may endanger gender or sexual minorities by leaking room-specific profiles](https://github.com/matrix-org/synapse/issues/5677#issuecomment-894831845)
+and especially [lack of self-destructing messages (that is nowadays a discussion rather than an issue)](https://github.com/vector-im/element-meta/discussions/682)
+considering even [DeltaChat (also known as an email client](https://delta.chat)
+manages to implement it without control over the underlying protocol and even
+less guarantees!
 
 ---