First of all no, they changed that with her minor update. She now has to fully complete the cast animation for Tibbers to stun you. So that's just flat out wrong.
She's easy because she is a basic champion with a basic job and not to do outside of her cookie-cutter combo. The reason she has a higher-than-average win rate is because she's very difficult to screw up with. Think of all the people who try to play Zed in Ranked, despite barely understanding his kit. Those people bring down his win rate. However, Annie is very easy to understand, meaning there's less room for error, and is more accessible as a champion because of it.
No, her counterplay is good positioning and good use of wards. If you're aware of where she is at all times, you should be able to stay out of her range if you know what you're doing. She can't kill you if she can't close the gap.
And finally, without any other arguments left to offer, you decide to insult my elo. I'm not defending her, I'm explaining to you how you can play against her and why nerfing her would be a mistake. Notice how I never claimed to be a better player than you, I'm just pointing out the fundamental weaknesses of a champion that you don't like.
Also, considering I'm listing off many different facts that you haven't been able to disprove, I don't see how that qualifies as "blindly say(ing) that she is fine". Meanwhile, you've listed off quite a few incorrect statements about how the champion works, making it very difficult to see your argument as anything more than ignorant hatred.