The parent's comment seemed well written overall and I wasn't personally put off by their use of ellipses.
The grandparent could have simply downvoted the distractingly punctuated comment (as a few people have downvoted your namecalling), but he chose to help the user out instead by pointing out what he'd done wrong.
Jesus guys, I was on the mobile site and ellipses are faster when I'm already feeling limited by my thumb's tapping ability to have to go hunt for the comma. I didn't realize it was such an issue that it spawned 6 comments about my style and zero comments about the content of my post or the article.
I mean, do I explicitly need to write: "I'm so sorry, I know I should have used commas but I didn't and it wasn't easy for me to proof-read on my device"? Good lord, even the original post is being crucified without response.