[nights192]

I understand the noise in the video is fairly unpleasant; however, others within the thread with more experience with the technology have testified that they are not, typically, perceived as this disruptive. (Whether due to the rotors straining less when not countering a raven/crow, or simply due to the frequency band of the phone microphone exacerbating the worst qualities of the sound.) Many express rancor about the very concept of delivered coffee--not merely the practicalities of it, and this is intriguing to me.

[i_am_jl]

I fly quads recreationally, though I'm far from an expert. I've flown a wide variety of fixed wing and multicopter drones, both payload/filming drones and FPV drones.

Drones that have payload capacity are loud, full stop. This one isn't especially loud as its payload is relatively light.

The comment I believe you're talking about mentions they can be heard from multiple houses away. That isn't quiet by any means.

[nights192]

They also state, however, that the drones are typically high enough to provide little disturbance prior to descending for the drop. Regardless, this doesn't primarily confuse me; rather, the hostility to the idea of delivery coffee writ large.

Thanks for clarifying the noise issue!