Or perhaps they just made a spelling mistake that once submitted slashdot will not let them correct (as far as I know).
For example. I just accidentally typed "submitting" rather than "submitted". I understand the difference between those two words. For whatever reason, I was thinking "submitted" and my fingers typed "submitting". I happened to catch it but sometimes I miss stuff like that. I really doubt it has anything to do with critical thinking. It might mean that their mind is racing ahead of their fingers.
I also fully understand the different between "their", "there", and "they're" yet sometimes I still use the wrong one. I also know the difference between "to", "two", and "too". Again, I wish I used the correct spelling at all times but I don't.
For whatever reason, I have a bad habit of type "he" instead of "the". Maybe the "t" on my keyboard sticks. Or maybe I'm just not perfect. In fact I made at least 7 spelling mistakes on this post alone, - that I know of.
It's a slashdot post, not a novel, a term paper, or an article I'm writing for a scientific journal. I trust that most readers of slashdot will be able to discern what I intended to write based on context if I do happen to make a mistake. A few folks may get annoyed by any mistakes I make but I'm not going to lose any sleep over it.