Yup, that's because X is part of OpenBSD base system, called xenocara, whereas in FreeBSD, you have to use the Ports tree to install Xorg.
Ports tree in general is a great way to install third-party software, but not necessarily for Xorg.
You still install KDE or GNOME through ports/packages on both systems, but X being more tightly integrated with the base system has benefits in reducing complexity for the rest of the components.
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Yup, that's because X is part of OpenBSD base system, called xenocara, whereas in FreeBSD, you have to use the Ports tree to install Xorg.
Ports tree in general is a great way to install third-party software, but not necessarily for Xorg.
You still install KDE or GNOME through ports/packages on both systems, but X being more tightly integrated with the base system has benefits in reducing complexity for the rest of the components.