I presume this is obvious, but the problem there is not whether it was pasted or typed; it's with the content dump. Good HN comments are supposed to be like good conversation. Just as one wouldn't read a complete list like that in a conversation, so one probably shouldn't write it into a thread here.
A list of extensions with descriptions of what they do or what you find valuable about them would of course be fine.
Please don't feel like I'm singling you out for criticism. I just randomly saw your question and was trying to provide information about why such a comment might have gotten downvoted. You didn't do anything wrong, especially in the context of this thread, and I'm sorry I didn't make that clearer.
In other words: why not make your contribution interisting somehow?
Didn't mean to be rude... just saying!