This is the issue distilled. And the retort seems to be “but we give a warning”.
Awfully weak stuff for a cypherpunk-ish protocol. The CCC crowd that rabidly hates anything centralised, thinks it’s insecure and corporate, are probably having a existential crisis. Matrix is doing a terrible job fixing the issues, worse they seem to downplaying and denying too. And the Tech press seem to dismiss the issue believing Matrixs’ claims there isn’t an issue.