Kovid may be right, but from a usability standpoint they're dead wrong.
Users will gravitate towards what makes their life simpler, once it was screen and now it's tmux. Regardless of the technicality behind it.
I actually gave zellij a try recently but went right back to tmux. Zellij seems like a very promising software but tmux still has a lower threshold of entry.
Yes, it has a bigger more active community with more features and plugins. I used to use screen all the time but then converted to tmux because of modern features that screen didn't support, at that time at least, like displaying certain Unicode characters and a way to restore a previous session. It was a bit of a hassle to make tmux work similar to screen and some things you have to really do in a different way, but overall I'm happy with the switch.
Users will gravitate towards what makes their life simpler, once it was screen and now it's tmux. Regardless of the technicality behind it.
I actually gave zellij a try recently but went right back to tmux. Zellij seems like a very promising software but tmux still has a lower threshold of entry.