Saw this linked elsewhere: https://soatok.blog/2024/08/04/against-xmppomemo/

For balance, see OMEMO Author Tim Henkes' response [1] to the blog, which was moderated.

This is linked from this blog post [2] where the author explains that they prefer XMPP, because it is not a silo.

[1] https://www.moparisthebest.com/tim-henkes-omemo-response.txt

[2] https://www.moparisthebest.com/against-silos-signal/