You shouldn't review the device if it's malfunctioning or you don't even know if you're the reason for why it's not working. This shows up high in the search results and hurts the company.
I don't review products that I "know" are malfunctioning. I plugged the dongle in like I have done with 50 other ones and it did what it did. I read the manual and searched the internet but could not find any information or FAQ indicating there was an app that could have screwed with the volume. I rebooted my machine, changed apps, changed sources, it all produced the same result.
In the past I have found some dongles producing low volume out of the box incorrectly. But that as soon as you adjust the volume control in windows, they start to work correctly. This did not work this time but led me to think it could be a bug as such.
The review is clearly titled as "aborted" and the short text explains the situation. Now if someone buys one of these used and finds the volume low, they know what could be causing it.
There are plenty of reviews you never see because I do find devices to be broken, not being a working design, etc. In those cases I have proof of the device being broken. Here, it just seemed like a firmware bug of sorts so I reported on that.
If you are advocating that I should never let you all see such things, that is good data point to have.