My Manjaro-i3 environment worked out of the box and had all of the things you'd expect (wifi icon, volume icon, battery indicator etc). The only reason I had to configure anything at all is because of personal taste. I find the Manjaro WM packages pretty good, personally.
But aside from tiling window managers, Manjaro also has pre-packaged distributions with Openbox, XFCE, Budgie, Mate and Deepin and a few other less lightweight environments like KDE and Gnome. There's also the "architect edition" which does require a bunch of configuration.
I usually just run nmtui in a terminal.
Edit: oh, that's some sort of ui opening command?
If you sat someone in front of custom configured i3wm, they would not have a clue how to do anything, really. The point is that the owner can have a nice customized and highly effective experience of using a computer.
There's a way to configure wifi easily without an icon, with some text based menus and nmtui is one way to do it if you use NetworkManager. You don't need an icon/GUI. Also there's nm-applet, so you can have a tray icon and GUI even in these DEs.
Ha, used a little MacBook for essentially the first time 2 days ago, it was being used to present a slideshow (MS Powerpoint). I tried to advance beyond the end of the slide stack and it closed to the editor [terrible UX for me, IMO it should blank the screen and show a message on the laptop; maybe that's the default, wasn't my machine obvs], I was completely lost trying to scroll the slide chooser (left pane) as there was no scroll bar, and no pgup/pgdn keys, click-scroll [which works in other UI that I use] was rearranging the slides instead of scrolling. It's so easy to get lost in unfamiliar UI.
We can easily adapt if we want to, however.