It does not change the fact anybody with a little bit of brains will install it below the bars and inwards. It makes the e-bike width shorter, protects the mirror, and ensures great visibiity.
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When I first got my Vado in 2019, it came with a Specialized rear-view mirror, as the 45 km/h e-bike had to be (as a moped) equipped with a mirror. I installed it the way you think
@Slaphappygamer because I thought it was the only way. Soon, I brought my Vado to the original LBS for the first time service. Upon seeing my mirror, the LBS guys made funny faces and the first thing they did was rotating and inverting the mirror to the proper position...