I can't find it on addons.mozilla.org. According to Mozilla[1] I can only use unsigned addons with ESR, Nightly and the Developer Edition of Firefox (which I don't use). I've tried setting xpinstall.signatures.required to false in about:config. It's not helping.
Rosetta 2 seems to work well for most games seeing performance way beyond what Intel Macs with integrated GPU were capable of.
There are a few games like World or Warcraft that already come with native support and similar to apps there are many games where native versions are expected to become available within the next days and weeks.
So yes, it is still early but out-of-the box the M1 Macs do really well compared to the previous models.
In a normal Team channel (i.e. not a chat message) when you press 'New conversation' you type a message and then people reply to that. That is a thread. The fact that you didn't even think of it as one I take an indication how seamless it is.
While mighty impressive, looking at the tech stack[1] for both Athens and Roam I can't help thinking this is too much to support my note taking (if I want to self host).
[1] https://support.mozilla.org/en-US/kb/add-on-signing-in-firef...