If it solves your donor's problem, fine. I just hope your donor does not use #XMPP for business comms though, because they might be disappointed to realise that so-called forward secrecy conflicts with important business needs such as traceability and persistence.
Try reading chatroom history from a new device if someone there is using #OMEMO encryption.
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The primary use case for Snikket is not business messaging, but personal. Traceability and persistence are not goals.
There are certainly features lost and usability concerns added when end-to-end encryption with forward secrecy is used, but it is our job to minimize this impact while maximizing users' privacy.