I am pretty much sure he is being sarcastic or just trolling. Look at his signature. It says that bitcoin price can't sustain above $10,000 USD and its a scientific fact. Lol, what? Sure, you have your opinion, but back up with something believable. Just saying "scientific fact" won't give you are credibility.
I have a different opinion from you. I don't think bitcoin will stay below $30k for 10 days. even the price of bitcoin has been strengthening above $30k for several weeks. I think the bitcoin price will stay between $35k - $40k till the end of this year.
And why do you think that? Based on what? Just some random prediction with no base? We already saw the price go above $40,000 USD a day or two ago.