My issue in the trail of arguments here is that sometimes, improvement can be an investment that is just to tedious with too little gain.
E.g.: my system is full encrypted. I sign+encrypt mail where possible. I prefer e2ee chats over others. I use FLOSS SW only, I do not use faceapp, whatbook or anything else of this crap. Obfuscating account names of things that are public anyways is just an investment that has no gain, but, in my specific case, even reduced usability.
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