He's posting in speculation mainly, and bitcoin discussions.
The whole Speculation board is filled with shills with an agenda, whether it's up or down, many people post there trying to influence the market. And it works, Bitcoin is very susceptible to good or bad news.
A topic like
Bitcoint to $1,800 USD by end of 2018 (note the "t" at the end of Bitcoin in the title) shouldn't be in Bitcoin Discussion. It's nothing more than a linkdump. I've reported it to be moved to either Speculation or Press.
The report linked in this topic about comes from a "Wall Street consultancy", they have an even bigger agenda.
Exactly, look at the following post.
Giant ponzis do not run for more than 10 years. At $600,000,000,000 invested in Bitcoin the money supply has dried up. Bitcoin has crashed from $20,000 to $12,000
and high profile people calling Bitcoin a giant scam there is ever increasing risk of international police raiding Bitcoin mines
The topic was - 'Bitcoin going to $400'