UPDATE: there is an update comment below. Each dot is a tweet.
Log scale makes the decrease a lot less apparent, but it is 5-10 fold across the board.
Edit: Just came to mind, that it isn’t fully representative of the true expected decrease. Since posts would likely be viewed for days, or weeks, depending on algorithms. Data-wise, it should smoothly-ish decrease towards today. Guess time will tell.
For data set and code see: https://github.com/Eximius/sentiment-analysis-test

Not entirely, the sample size of data is rather small. But the coincidence is… stronk.
Also, getting pissy at some very far away datacenters going poof feels self-incriminating.
Seems like a pretty healthy sample size for this effect size