I understand his exaggeration but the whole design of echo is broken. It promotes unhealthy siege compositions with no draw backs. It even gives move speed to further help the user get into range to poke, kite etc. (many uses here), which for the item is logical but also from a balance perspective is absurdly broken because nearly any champion who would utilize echo wouldn't need to get much closer to get their abilities off. (Ziggs, xerath being the most annoying).
Not only that but statikk has at least positioning concerns for the user where as echo you can blindly shoot abilities and have it trigger. WHAT? That's just stupid. Zero counter play besides dodging abilities that most champions have come up within the 2-8 second range granted they could also use another ability to proc it. It's ridiculous and in aram it's even more retarded. An argument saying get good and dodge abilities is invalid. If you dodge an ability you're fine but there is typically 4 more people nearby as well as minions or champion summons (heimer turret, zyra plants) that could also help it trigger.
I also don't understand why we traded a burst item to then turn every AP champion into an average to insane sieger. What in the world lol? Anyways, I understood what you were saying regarding nashor's and such but echo has pretty consistent aoe damage while it may seem low it certainly adds up. It has made many unconventional ap champions better WHICH I promote and like that concept but also note it already made strong ap's much stronger. We'll see how it goes but nothing is more annoying than echo for me personally. I think it's completely broken, no draw backs. You can say it lacks defense but most champions using the item don't need much defense due to their ability to siege and even with the increased MS will have an easier time not needing the defense. It's too good.