The 800 series is considered to be within the realm of a professional camera. As such, some consumer features are removed, but that niche is usually filled with many 3rd party solutions that are more substantial than the simple built-in IR remote...
Actually, that sort of device is precisely what I was trying to avoid. It seems to be a very inelegant and clunky solution when they could have put an RF trigger receiver in the space where the built-in flash used to be.
Oh well, I guess I'll just use my phone (via Snapbridge) as a remote trigger.