Being a user of E2EE video chat tools and calling apps, - I've been following this, especially more closely ever since Jitsi disabled anonymous video calling on thier main instance /Jitsi Meet
(Yes, there is a the Jitsi Meet Community Instances that are still with the original full functionality that people can access- If they search for Jitsi alternative community instances on a search engine, which isn't something most will be aware of for your average user...)
Having been a user of the Jitsi Meet Electron App even on Linux and Windows(along with the web accessible variant)- and having followed closely the efforts by Firefox on RTCRtpScriptTransform (formerly webrtc insertable streams) mainly to support Jitsi E2EE calls- has been interesting to watch.
Though now with the new Google/Meta/Microsoft account requirement/non anonymous aspect, all of that minus the community instances web interface sites are of use to me now.
If i follow fully, Element Call in a way replaces Jitsi Meet's original capability- though E2EE encryption doesn't have to be "Turned On " in a Chromium based browser - and Element Call isn't yet something that can be launched from a desktop app on Windows or Linux in a similar user-friendly way (I see the Vector IM client is a thing)
- The main difference being for using Element/Element X, one new from the Jitsi Meet ecosystem /usecases i've mentioned, will have to make an account- and for your average user who cannot easily learn about and deploy a server and how to host that on their own- but is looking for privacy- it is trickier to judge and will be more steps , to achieve anonymity from a privacy perspective.
I see the P2P effort is another step towards this as well
I'll likely try to use Element Call and point those I know who use tools like this towards it due to Jitsi's recent changes - as Element Call's web interface is user-friendly enough, and that is the main challenge. What Element is outside of that- and how it integrates into everything and how to use it in the same way in it's other forms- will be interesting to introduce, as those are developed further.