It might seem to many that this topic is quite insignificant, and should not take much space in the programming blogosphere. If you ever had to browse the history of several dozens of commits, trying to figure out which changes could have introduced a bug, and more importantly why, you understand the importance of it, for sure.
The issue with the generic commit messages is that they don’t provide enough history information. Once you find yourself looking into the file history, you’ll appreciate all the additional effort to which you, or your colleague, has put into thinking of a meaningful commit message. When you think about it, it’s not that much of an effort to think about what you have done and put it into writings for your future self.