Are you asking if other HNers are offended by it? Are you asking if other HNers think you should be offended by it? Are you seeking support for a community censure of people who use that language? Are you asking if you can go around calling anyone with less experience a "noob", without context? Are you asking if you can, in some context, write marketing copy that contains the word "noob", and has a desireable outcome? (My answers are "no", "no", "no", "no", and "yes", in case one of those was your question.)
I feel like your question is fundamentally confused, and it's the sort of confusion that leads other people to make snarky comments about "being PC", which drags down useful conversations about healthy community standards. Maybe I'm the confused one, though, so please help me to understand.
That's all!
Whatever happened to the word "beginner"? (EDIT: Ha! They changed it to "beginner", and I didn't notice until I'd posted this.)
I suppose I should finish this post with, "NOW GET OFF MY LAWN".
What's the difference between "geek" and "nerd"? Ask five language communities, get five different answers. Or ten answers, if you ask the same five language communities again two years later.
When you use slang in a new speech community, you need to expect that to your listener, it probably doesn't mean what you think it means, especially in fine nuance like you're claiming exists between "newb" and "noob" (or "n00b" or "newbie" or "nooby" or "noobie" or ...)
http://www.urbandictionary.com/define.php?term=Noobs%20vs.%2...