The biggest thing I disagree with is that Bitcoin will never be stable. EVER. No matter the price. Never.
It was said at $2 that if Bitcoin reached $100 or $1000... and guess what? It was just as volatile as ever. It will be the same story at $10k.
Thats actually not a good thing imo, as a lot of people/merchants decline to use it because then it becomes a gamble.
Fiat money is not stable either. Just a few months ago the dollar was worth 5.5 of my local currency. Today it's 6.6. It has been 7 in the past and may for all any of us know go over that in a little while.
There is money to be made trading this shit. It's completely normal. And it is one of the things that will, do in fact, attract money people.