Someone is just mad that he/she can't buy any bitcoin.
If you spend more time on the forum you'll see that posts like that appear on a regular basis. Some of those guys that wanted to buy BTC below $1000 a year ago and were waiting for crashes are most likely still waiting. I personally know investors that became angry with BTC for not following their pattern.
I believe that these people are the real idiots. I would understand if they some money with Bitcoin for which we can show our sympathy but they have not touched Bitcoin all of their lives and yet they feel like they are not in the authority to say anything outlandish about Bitcoin. They feel like they are the savior of those people who might lose money in Bitcoin and so they must warn one and all about the impending doom and gloom.
While respecting anybody's right to speak anything, they should never assume that all the people involved in Bitcoin are just like blinded sheep being swayed into the slaughterhouse because certainly we know what we are doing here, we understand the risks while being ready for what may happen where Bitcoin can be valued like 1 Million by 2020 as John McAfee would like to have it OR become just like another thing that bite the dust ala tulip mania bubble pop. Bitcoin holders and enthusiasts are already familiar with the rollercoaster ride of Bitcoin and nobody should be telling us about it anymore.