the market didn't react because the trend is not in the same direction as that tweet. the same thing is true when some FUD comes out. whenever there is some kind of news like this that is about to change the price, it can only do so if it is in the same direction as the market trend.
for instance if a good news comes out during a rise, it will contribute to the rise and make it bigger and if it comes out during a drop it will be either ineffective or slows it down.
right now we are in a stable phase which means any news is ineffective unless it is ridiculously huge!