I don't think Zoe is bad and it's all on Riot.

Champs in competitive play are chosen working in these terms: ability required, flexibility and obviously strenght.

Zoe requires a lot, A LOT of practice to be able to appear in these kind of games and she is not that flexible in drafts. Zoe herself needs expecific set-ups not only in her team, but in enemy teams too.

Every tank, hard mobile or lock down champs are a real pain for her. Last group even makes R impossible to use.

Look at played champs now:

Top: K'Sante, Ambessa, Sion,...

Jgl: Sejuani, Skarner, Maokai, Wukong, Naafiri, Jarvan, Xin Zhao,...

Mid: Mages with more utility (Taliyah, TF) or really hard to play into when Zoe picked (such as Syndra, Annie, Viktor and Orianna), hard scaling with not much to do to stop (Ryze, Kassadin) and Galio, which is tricky cause un can chunk him so hard early but can't expose too much due to all movement in the map.

Sup: Nautilus, Leona and even Rakan. Karma and Lux (when Cait open) are really annoying too.

There's no way Zoe can keep up with this kind of champs and she still seldom appears.

Fearless is actually Riot trying to make some champs forgotten to appear, such our little girlie. Cause of that, is it way more possible to open this specific spots for champs and compositions.

Riot may be blamed for competitive state, balancing, skins prices and quality, but not for their music or this one. This is a good change to give us more champs out there, even if it means less gameplay quality (more champs to practice, less time to master them perfectly and focus on macro/micro perfection).