FWIW, there is a setting to set no info on the HDMI output.
Also, I bought one of these $18 devices. I'm not sure if it was the specific device I bought, but the video framerate was pretty bad. It looked like maybe 15fps or less, a pretty big delay and even had tearing.
I decided to buy an Elgato Cam Link 4K. This is WAY more expensive, but Elgato makes great stuff and I have a lot of it. This is capable of 1080@60fps, 4K@30. I figure it gives me more options for more than just Zoom. For Zoom, I am simply running the XT3 at 1080@30 because I don't think Zoom does more than that anyway.
The Elgato Cam Link 4K works perfectly, as it should for the price, with almost no lag/delay at all. Of course, it's ~$100USD on Amazon.
The only other thing I will share, but I feel like this specific issue is either my computer, Zoom, or my XT3. Every so often, my video freezes on Zoom while in a meeting. Not that often, but more than a couple times. However, I am on Zoom meetings almost the entire day. I haven't been scientific in my troubleshooting, but I believe I simply stop video on Zoom and turn it back on and it's fine. Like I said, I believe this is true, but I need to test that more. If so, that says to me it's a Zoom issue.