You are right, what do you expect? They are new to the Bitcoin system, and they will always react impulsively.
But this is not peculiar to newbies alone, many experienced Bitcoin investors are still facing this issue, it is emotional. No matter what you preach to some people or have learned themselves, when it is about money, they can't help it but be emotional, it is in their nature. While it is minimal in some people where they can try to fight the emotion, it is biting in others, they must liquidate it, but only to regret their actions later when they see Bitcoin higher.
The truth of the matter is that it near impossible for an experience Bitcoin investors to react emotionally to his investment if he is doing the right thing. He or she is being emotional because he or she is investing what he cannot afford to lose, and that is the major cause of panicking of most Bitcoin investors. Sometimes we underestimate the the importance of investing only with our discretionary income, that's why newbies easily falls prey to this, and they most times panic anytime their is a dip in the market because they lack the knowledge that investment in Bitcoin is only done from your discretionary income not any money that got into their hands, sometimes they invest money meant for their upkeeps and because that's pure gambling, they will later sell prematurely when the needs of that money used to invest in Bitcoin arises.
So ignorance and investing what they can't afford to lose is the major cause of an investor being emotional to his Bitcoin investment.