I'm a big OpenBSD fan, but the OpenBSD devs recommend you install Xenocara, otherwise its considered a non-default install.
OpenBSD Amsterdam (A well known provider in the circle of OpenBSD users) doesn't enable X by default on its autoinstall file:
https://openbsd.amsterdam/setup.html
EDIT: It enables xbase.tgz but not the rest.
They've even threatened to make just one big set since too many people are not installing all of them and then come ask for help .
Even mgba got patched.
I woudn't call that as "don't use it for anything".