I totally agree with you because there is no amount of knowledge a newbie we have that he or she won't be drive or shaked by market fluctuation because they are still fresh to the game.
What do you think makes someone a newbie? It's mostly ignorance or lack of deep knowledge about something, if an individual in Bitcoin investment knows all it takes to invest and hold for a very long time, guy that person is no longer a newbie, because he has all the required knowledge to succeed.
So wether a person is just starting to invest in Bitcoin or not, he will never be shaken by market fluctuation when he knows it all on how Bitcoin operate generally.
The fact that someone knows all it takes to invest and hold for a very long time doesn't mean that person can not be seen as a newbie, knowing how Bitcoin works and how to hold doesn't mean you have arrived in Bitcoin investment rather what shows that a person is not longer a newbie is, discipline, maturity and sometimes experience in Bitcoin investment. If some great investors do shake because of dip sometimes then is it a newbie that just joined or venture into Bitcoin investment new that won't be carried away and moreover, knowing all it takes doesn't guarantee your success in Bitcoin investment perhaps you don't understand what Sotelorene is talking about.
The word 'newbie' is a collective noun, it can be used in different situations when a person just arrived at a perticular place or space, so in general it refers to a new person. For instance you can have all the Bitcoin knowledge but when you register on bitcointalk forum you are a newbie, despite your wealth of knowledge in Bitcoin because it is an anonymous space, you need to proof your worth before you can rank up. Newbie also refers to a person that doesn't have any experience in the subject, they don't have any directions and they need guidance to gain knowledge. If a person that has been in a Bitcoin community like Bitcointalk forum for a long time and does not gain any knowledge, the person is no different from a new member and they are both newbies because they lack knowledge.
No matter how long you have known about Bitcoin investment and you don't have adequate knowledge about it's circles and difference between long term and short term holding that means that you are still a newbie. Moving out from the newbie circle is to understand how to be profitable in Bitcoin investment and act on the principles, then you are no longer at the beginning or naive stage. Having a profitable strategy to hold Bitcoin is not complex, make plans to hold for a long term and don't bother about short term speculations.