I'd like it for a voice recorder.
Every single recording of a meeting or lecture sounds like it was recorded in a gymnasium. For some reason, omnidirectional microphones SEEM to "enhance" the room reverberation, and the result is way more "muddy" than what it sounds like "live".
It's more accurate to say that the omnidirectional microphone is not able to distinguish room reverberation from any other sound. Omnidirectional microphones capture sounds equally (you could say blindly), regardless of direction or source. The reverb is real, not "enhanced." Most people's hearing, however, is three-dimensional, thanks to having two ears, the design of our outer ears, visual cues, and our fabulous brains. We can distinguish echoes/reverberations that arrive from the side or behind, and our minds can use that spatial information to focus our attention on "direct" sounds and de-emphasize extraneous noises.
A single microphone or single camera lens captures far less spatial data than is present in the "live" environment - monaural sound, monocular vision. No brain.
Intelligibility is greatly enhanced by having that microphone as close to the primary sound source as possible, so that the intensity/signal strength is proportionally far louder than the extraneous sounds/reverberation. However, if you have a room full of potential sound sources (as you do in a typical conference room), the people speaking may be as far or farther from the mic than the nearest sources of echo/reverberation. That means the signal you want is barely louder than the signals you don't want.
One very successful microphone technique (that doesn't require the kind of signal processing done by HomePod) is called "boundary layer" or "sound stage technique,"
https://en.wikipedia.org/wiki/Boundary_microphone - placing a microphone close to a hard reflecting surface (like a floor, tabletop, or wall) so that the strong echo bouncing off that surface is proportionally louder than the more distant "direct" sound source or other reverberations/echoes. The closer the mic can be to that reflecting surface, the better. Lacking a specialized mic for the purpose, recording engineers might simply position a garden-variety mic an inch off the floor.