From https://zulip.org/clients.html:
> There's a Linux client, but we don't have binaries posted yet. We hope to have a PPA setup soon.[0] In the meantime, you can clone the git repo[1] and build from source.
[0]: https://github.com/zulip/zulip-desktop/issues/1
[1]: https://github.com/zulip/zulip-desktop
It's mostly a WebKit wrapper, just like the Mac and Windows clients, but it does provide an icon and a dedicated window and potentially better integration with system notifications etc.
Completely true.
> Linux Desktop will never be more than a VM host or Web Browser host.
I did mention this on a developer-specific context. AFAIK, most developers tend to use Linux nowadays - at least in all the companies I've been in during the last 10 years, windows users have always been a minority.
(YES, I'm perfectly aware that this is not true for average users, or anything outside IT).