Ah that is not quite accurate. Sure many linux distros will install a desktop environment for you. FreeBSD will require you to install a package for the one of your choice which should also install all dependencies. As noted elsewhere, X pretty much works now with no additional config update unless you have a very unusual setup. That shouldn't be too high a hurdle as even on linux you will need to know how to install packages at some point too.

And if you don't want to do that, you can try something like GhostBSD which is based on FreeBSD with the MATE desktop.