Also, Signal’s centralization, sussy shenanigans with mobilecoin and not updating their server app repo for over a year (latter they ceased afterwards iirc but still very detrimental to trust, especially since git reflog manipulation is ridiculously easy) and dependence on proprietary libraries and network services (in case of libraries there are thankfully at least a couple forks without such dependencies). Plus most of their servers that aren’t necessarily CDN being located in glowieland…