It's ok if you are clear enough about what info you actually have, just saying "it seems" or "people have installed pfSense/OPNsense on it" is still a good tip for those that might have some laying around or want to do some experiments.
And let's be fair, BSDs are very picky about hardware and all x86 hardware they support is also supported by Linux. If it runs pfSense/OPNsense it's nearly guaranteed to be fine for OpenWrt too.
Given that this is a high-end firewall I think the wifi capability is secondary and I'm personally more interested in the "optional addon" drawers with more ports or SFP slots. I really hope they are just a proprietary connector for PCIe lines and they are just using normal Intel/Broadcomm controllers. So it's just plug and play on OpenWrt.