Interesting, thanks for that.

The first link you posted states that the master key is stored. It also states that the information on the page doesn't match the official blog from Signal, but that they've gathered their information from the source code, so I assume it's correct. It does make me wonder why Signal doesn't say that they store the master key though 🤔

Do you have a reference for Signal using SGX for keys?

Everything I could find was about metadata and private data, e.g. contact lists (which is what the SVR thing that you mention is), but nothing about keys.

Because the trade off isn't worth it.

While it's nice having extra sunshine in the morning or evening depending on the time of year, it is quite disruptive, especially with kids and working with teams across timezones etc.

But more importantly, people actually die from it. Consistently, and predictably. I can't in good conscience support a policy which is merely "nice" for me but will literally cause other people to die.

Pixel 7 owner here. I'm very happy with my phone and will gladly get a new pixel when this one dies.