The casters literally just said that the intended weakness of Ekko is not in effect.
https://www.twitch.tv/riotgames
Game 1 of G2 vs FNC start watching at 14 minutes into the game.
And yes it is about how he can just sit in the middle of the fight, get 2 stuns off and ult when health starts getting low while getting kills because of base damage from his kit.
EDIT: 46:00 in this video provided by iguy https://www.youtube.com/watch?v=-YO_saOFxdw