In reply to Weston Ruter.

Yes, the email goes out to all committers.

To give an example, if CommitterA commits a release CommitterA, CommitterB, or CommitterC can confirm the release.

There's also an option to enable multiple confirmations, for example: A commits a release, and A+B, A+C, or B+C must approve it before it's released.
This currently requires contacting the plugins team to enable as it hasn't been as thoroughly tested, and is not what most plugin authors would want to "accidentally" enable.