Wtf is “Linux desktop”? There are more than a dozen different mainstream desktop environments and window managers that have different degrees of maturity, stability and complexity so this blank statement is very hard to support. Not even talking about the servers/prtocols behind it. I can certainly not confirm that experience on Sway, Gnome and Hyprland and with how young the latter is, I would actually expect it to break.
So no, from a technical perspective, Linux is absolutely ready as long as you stick to stable distros and configurations.