I don't really see how this is too much of a problem. You always get people like this, somebody who stays up all night playing and then wakes up the next day to play some more. I've been playing almost every day and I'm only LT. 5 right now, not even LTcmdr.
So is there level 45's? A fleet member said he logged onto his Fed and someone was out in a T5 ship already!!! WTF!
Your fleet member probably doesn't even know what a t5 Fed ship looks like. Although there are some people who are t4, and yes... they play ALL the time.
In reality, most people won't put in so much game play in such a short time, also it speaks nothing of how indepth the game is because I would bet they didn't do the storyline quests while leveling as they're not exactly a fast way to level.
Lastly, why do you care so much? Pity? I mean they'll be up there by themselves for a while... alone... cold... wolves after them...
Its not like they can come harass you in pvp or something.
Well, maybe in the resource games... but I'm not sure.