It might force the developers to commit more in the granular Git way, but it doesn't force bug reporters and discussions to be more mindful. Looking at my timeline, and following Backbone.js and Handlebars, about half my feed on any given day is discussion from 2 or 3 bugs on each of those projects.
So even though the committers might be mindful, doesn't mean all the users of a project are.
So even though the committers might be mindful, doesn't mean all the users of a project are.