According to Google, this will improve the quality of the comments, because people will not be able to write all in capital letters. I’m not a fan of the caps lock key myself. I never use it, so it can go to hell, for all I’m concerned. But taking away choice from people is not good, especially when this is not going to improve the quality of comments.
First, PEOPLE WOULD STILL BE ABLE TO WRITE AS MUCH AS THEY WANT IN CAPITALS. See, my left pinky did that, not the cap locks.
then, people would be able to write all without using any caps at all, which i find just as annoying as writing all in caps. maybe the next step is to enforce proper capitalisation for all text fields. and is google also going to forbid the unnecessary repetition of exclamation and interrogation marks!!!!!!?????
At the end, improving the quality of comments doesn’t depend on the caps lock key. People who virtually rise their voices and insult on the internet will continue to do so. What really improves the quality is moderation and, ultimately, education.