I say ez all the time.
Why dont you just leave if youve been eliminated? No point in staying and arguing with the guy, hes just prideful and happy he won.
Probably just saying "ez" becuase either it was actually easy, or hes just trying to sound dominant.
People say "lol ez noob" to me, i usually just say gg then leave because i dont want to argue with the player.
I also often get called a hacker (bcuz those nubs r 2 ez 4 me), i usually joke around and "admit" im hacking, ignore him, roast him, or tell him im not hacking straight up and why.