It may not actually be all that rare. When some of these checks came out, it was difficult to find large mods that didn't already fail them. But several if not most of those have been updated by now.
Try it and see, and if it crashes, report it. If it doesn't crash on startup, it'll generally work fine. If you don't want to wait for an update, get the version of OXC or OXCE that it was designed for and then it should work.
If you can't tell what version it was made for, then anything not updated in recent years should run fine on OXCE 6.0.