Based on my read of a few of the Microsoft Duo reviews, which are negative, I see that they are written in the context of the device’s $1400 price. Compare reviews of the Google Pixel 4a and the Microsoft Duo, in some ways they are the same, but because the 4a only costs $350 the issues are understandable or overlooked. Devices priced at $1k or higher need to be perfect; the Duo appears to be a beta, akin to Google Glass.