alt Hacker NewsThe comment you are replying to is using commas correctly: it's partitioning off a clause of the sentence as a side phrase that can be removed, and the resulting sentence is a fully grammatically-correct sentence. If you really hate commas, you can replace the commas here with parentheses, but honestly, I prefer the commas here.
I agree with the parent that in formal written English, the comma would be incorrect—cf. the "In compound predicates" section in [0]. But I disagree that the sentence is hard to parse as a result, and I doubt many would think twice about it given that we're on an informal internet message board.
[0] https://www.grammarly.com/blog/punctuation-capitalization/co...