> Probably a great time to buy.

He or others like him may not have sold off all of their coins and need dumb money to keep the price afloat just a little longer...

If it were a great time to buy, he would have. Follow the actions and not the words in markets like this.

I've been investing long enough to know that:

1) if a disruptive tech has plenty of personal intrigue and 2) plenty of brilliant people herald it

then buy the crash.

It's possible, but not too likely at all at this point, that China will reverse this decision. I don't know how far BTC will fall, but let me tell you this. If it falls to under $10 like this person[1] says, I'm going all in... $5,000 USD's worth because I'm a fool. If, by some improbable & unfeasible way, China does reverse and BTC reaches $1,000+ again my cheers will be so loud that everyone on HN will actually hear me.

1. http://www.businessinsider.com/williams-bitcoin-meltdown-10-...

What makes you think it's possible China will reverse it's decision? This reads like wishful thinking.

He thinks that the price is near or at the bottom, I suppose.

Yep.

~ 30 day low at the moment