Apparently, no it is not. It still here with us.
Being on the market for a really long time made it quite difficult to just dead in a short time, because even if someone do a huge dump, there are still a lot more people using this coin, and that will help the coin to survive
It was a joke
It offers nothing over bitcoin, and has hardly an active dev team. It's price has dropped over 1000%, I'm sure that can be called dead! or failing.
All I hear is "blah blah blahn imma selfishly FUD another coin cause I want my monies to increase value so ill troll as much as I can"
There are many fuds about litecoin at this thread or other threads. But the litecoin price has not rise for some time.