I realize you're probably using this discussion about the Synapse Admins chat as a springboard to talk about encryption in general, but for anybody unfamiliar with Matrix rooms: encryption is optional, and wasn't a factor in the issue.
The Synapse Admins channel discussed by GP and GGP is not encrypted at all, and its messages are publicly accessible to anyone[1]. This means that various detection scripts could be run on messages at any time by the server, including when receiving them, and before propagating them to their database.
yes encryption is optional , and its generally not recommended in big groups but for me and my friend in a very basic group , encryption was causing problem in matrix and basically no problem in signal
The Synapse Admins channel discussed by GP and GGP is not encrypted at all, and its messages are publicly accessible to anyone[1]. This means that various detection scripts could be run on messages at any time by the server, including when receiving them, and before propagating them to their database.
[1]: https://app.element.io/#/room/#synapse:matrix.org