Why is everyone worried about unlimited?

Oh, it's definitely still around.

I mean, its nothing new to me either way. Even my nostalgia for the game is filled with memories of people basically hacking the everlasting hell out of every map and killing everything there within a second or two of its spawn. I generally came to the conclusion that Maplestory will always have people who are head-bound and determined to play the game in the easiest way possible, so hacks like this "Stack hack" and no-delay will always exist in some incarnation or another. Or at least, cheats that are equally as severe will come along and replace them if they are fixed. The game is too popular to not come under attack.

In short, I've grown used to it. As much as I'd like for things to be smooth, balanced, and honest, it'll never be that way so long as the temptation to cheat and the tools to do so are out there.