Annoyed only because they are hyping it. They didn't hype 600, 700, 800 or 900. They did hype 500 a few times, I remember that, and it ended up with Rayleigh being revealed.
Fun fact, it took roughly 11 years to get to the first 500 chapters. Its been about~ 12 years since then to reach the next 500, due to Oda slowing down his chapters release schedule since 2014, it'd take another 13-14 to get to 1500 if it were possible.
Now I doubt we are getting 1500 chapters, but his "5 years left" comment is complete BS and most of us know it. After 1000 im curious to see how many 100 chapter milestones he crosses. He will definitely surpass 1100 and 1200, thats super obvious at this point. "5 years left" will at least have him get to this point. Its after this that it will be hard to predict where the series concludes. Will he cross 1300? 1400? That is 7-10 years away.