No, I didn't choose to opt out of livestreaming in any way. I'll take a look at it and see if I can get it to work.
I'm not sure if you've tried this, but you can record the video from the Quest, and then transfer it to your computer through SideQuest. That's what I do for gameplay videos. Here's a nice little video to get it to record in landscape:
In the SideQuest settings, there is also a section entitled "Set Video Capture Size" that states that "This changes the resolution of captured videos on the Quest" and offers the options of 480, 720, and 1080, but maybe that still captures a square? I'll have to try the ADB commands vs. the settings and see. That said, a lot of the comments mention that doing this has a significant framerate cost, since this is essentially just cropping/zooming the native output from the Quest in the headset itself.
I haven't had a chance to test it yet, but I'll let you know. I decided to sleep last night instead. ;) Also, if you get bored (because, you know, you don't have a ton of other more important dev work to to), you could also setup your game to be mixed-reality compatible, which is a very, very short list of games right now: https://developer.oculus.com/documentation/mrc/mr-quest/. Then you can show off your game like all those mixed reality Beat Saber game clips like this one:
I also recommend you create such a video featuring the most attractive woman you can find, because the VR world is still dominated by male players and we are small minded individuals. :P