Funny, given I've heard from multiple infosec people, that they believe telegram is a honeypot.
Client devices have many routes of compromise available, it's very possible that the data exfilaration is occuring there rather than server side.
You'd think the backers of Matrix (largely European Governments) or the privacy focused userbase of XMPP would go beyond forklifting in the same double rachet library that Signal and ilk use, but apparently they all think it's the best available option.
Thank you for your hard work on making Matrix better for everyone and explaining why in depth!
You make the world a better place!
also, an unanswered question remaining was that the integration with meta viz DMA would apply to element only or the matrix ecosystem in general like i would be able to use fluffychat or cinny for example