Every time someone picks yi, we lose.
 

Usually ends up being a feeder. Why is every Yi noob?

Because Nekrogen has a lot of smurfs!

They're building him wrong. Hue.

Because he has no CC/squish/has to farm. Most players do not know how to play as yi.

Because he's only 450 IP.

So is Ryze. Oh wait...

Its really hard to suck as Ryze, you have to actually try hard to suck.

This.
Ryze is usually manamanamanamanamana and then you win.

It's not so much the hero, but the mentality of players that choose those heroes. I've observed players that pick 1v1 heroes tend to run off to attempt to finish enemy wounded heroes instead of capping/defending towers.

Similarly, other heroes that fall into that category are Evelyn, Twitch, etc., to name a few, although of course, there's exceptions to those heroes. They can be played well, it's just, well, rare.

It's usually because they have no idea how to play Yi.

Here is how i usually see yi's build

AD - Phantom dancer -> inf edge.
AP - Lich's Bane, Something else that isn't correct.

It's all about the order baby. Dmg -> Atk speed even in Dom. A zeal into BF sword would be better than a PD, or the IE early.
Same with ap. Rabadon's into lich's bane is probably one of the highest dps ap builds for yi, yet people continue to just grab dat bane and feel like they can't lose.

Kids need to learn how to play.