The i3 WM has been in Fedora Linux’s software repositories for some years now, so if you wanted to use the Red Hat-sponsored distribution with the i3 tiling window manager, you had to install it on top of an existing flavor, such as Xfce, LXQt, LXDE, MATE, etc.
But with the upcoming Fedora Linux 34 release due out in late April 2021, that will no longer be the case. Happily, Fedora Linux is getting its own, dedicated i3 spin featuring a pre-configured i3 tiling window manager by default.