Here are some more impressions: https://kconner.com/2025/03/09/haiku-os-study-path.html
The window manager might look a little old-fashioned, but it seems solid as a dev workstation.
There are not that many native applications. But there are a number of GTK and Qt apps that have been ported (like GIMP).
It depends what you need from your OS.
Docker is literally a Linux native tool that is for Linux only. The only way Docker works on anything that isn't Linux is by running a Linux VM, containing Alpine.
It is not a Linux and no you cannot do Linux things with it like run Linux containers, because to run Linux containers you need Linux and this is not a Linux.
I am trying to emphasize this because your question seems to be asking "what kind of Linux is this?" and this is a category error.
https://en.wikipedia.org/wiki/Category_mistake
Or, as ESR originally put it, it's an X/Y problem:
https://mywiki.wooledge.org/XyProblem
Yes, a Firefox port became available recently. I don't know if it can run Zoom. I go out of my way to avoid Zoom if I possibly can.
Sorry but this is demonstrably false. Not only is Alpine not a requirement in the slightest, Windows Server's own containers work as a backend for Docker just fine.