This is just writing; terse maybe and maybe not grammatically correct, but people write like that.
It's not just terseness, it's the rhythm and "it's not x, it's y".
In fact, the latter is the opposite of terseness. LLMs love to tell you what things are not way more than people do.
See https://www.blakestockton.com/dont-write-like-ai-1-101-negat...
(The irony that I started with "it's not just" isn't lost on me)
alt Hacker News
It's not just terseness, it's the rhythm and "it's not x, it's y".
In fact, the latter is the opposite of terseness. LLMs love to tell you what things are not way more than people do.
See https://www.blakestockton.com/dont-write-like-ai-1-101-negat...
(The irony that I started with "it's not just" isn't lost on me)