Well, As he might be ignored because of the WAY he writes - he was right so far.
Any comments from devs on his claim about 1 billion coins?
AFAIK 1 bil will only be reached in 2050.
The main reason for the price going down is that its right now extremely CPU friendly to mine, so botnet "owners" took advantage of it for quick profits.
But the algo will be switched to a custom optimized heavy on 2nd July. CPU mining will be quite useless.
Price is expected to go down pretty much until the fork, maybe even some days after it.
Devs would probably say something similar

Price is probably more expected to go up with "airtime" at 140k height rather than at 110k fork.