https://gitlab.futo.org/keyboard/latinime

Debatable how “proprietary” it really is.

You can probably use an Elgato Facecam (Mk.2), configure it in a Windows VM and then save the settings directly on the device to use it under Linux.

Does this support other targets like twitch VODs?

Nah, that was public opinion on /r/datahoarders (I think) back when I still used reddit.

People complain that they won’t respect their lifetime plans forever, but otherwise I haven’t heard anything bad about them.

Mattermost does not have E2EE to my knowledge.

Not E2EE though, or at least not fully.

XMPP only does it with certain client extensions. And Matrix only does it when the rooms are set up this way. SimpleX does what you want, but is kind of unintuitive for the average user.
I say go with Signal, it does what you want and is idiot-proof.

But as a third party you can not know which clients are using this outdated http mirror. On BitTorrent you can see every participating peers and some of them are probably enduser machines (depending on the actual implementation of OP’s suggestion).

using your simplex profile on both desktop and phone

Why would that be hard?

Wow, I think this basically makes Session obsolete.

I was one of their strongest advocates, but their progress is unbearably slow. SimpleX for example has advanced a lot more in the same timeframe.
To me it seems like at the current pace they will need another two to three years to solve their problems.

The title could use the word “router” somewhere.

Doesn’t seem that much simpler, tbh.

Do I have to manually install PPD?

You can not enable the “feature” to keep search history. The slider stays disabled when you try.

That is not what Ethnicity is.

That’s not so much a filter bubble as it is noise reduction. No, I don’t want to have Pinterest results in my search engine. No, I don’t have an Instagram or Twitter account and therefore can’t see the content there anyway. I am developer, so I want to raise the relevance of GitHub in my results.

Have you considered TrueNAS Scale?

Nice, I was one of those affected by the -20dB bug.