So, if you would, help me out with the ‘why’ part

It eliminates a single point of failure, can be used to bypass censorship, and allow for community support/engagement in a way that is harder to track and suppress (in that there’s no ‘central’ hub and you have to go after nodes individually. From an opsec point of view, you’re still broadcasting a signal that someone in range can pick up). Obviously it requires many devices to make a good mesh work, but short of DOSing every channel or just blowing out the signal space, it’s gonna be hard to take that down.

I see it as something like tor or i2p, not something for general use at the moment, but definitely has good uses.