“This can be a very beneficial feature for everyone”
No, this is beneficial ONLY for Microsoft.
The concept is that Microsoft updates can be supplied to the community at rates that are higher than what Microsoft can supply. When you need an update from Microsoft, do you want to “wait in line” for their servers or be able to get the same data elsewhere without a wait?
Bit torrent has been doing this for years. Many of us use it to download GB of data at a time. A community supported collaborative download can be much faster for the client. Thus, there is potentially a benefit for everyone, not just for Microsoft.