My dear!
Have you read the opening post closely?!
He explicitly wrote that the $10k won't happen over night!
This is a process which will take several years. And in that case I totally agree with that opinion. In 5-10 years, when probably 1 or 2 ETfs will exist, and 2020 after the next halving, and Bitcoin being seen more and more legitimate and serious over the years by big investors...5 figures can become reality without a doubt.

In terms of your last sentence. I don't think it's the right time for an ETF now.Way too early.Bitcoin needs be more mature.
But it will happen.Just a question of time.

i disagree with when you are putting it like this.
the $10,000+ price is still possible without ETF and with it. the only change that it can have for bitcoin is a very small more publicity and then that may lead to more people investing in bitcoin directly by going to one of the exchanges like coinbase and buying bitcoin to hold.
if they go to bank as you said and buy coin shares it won't change anything for bitcoin, its adoption and the price of it.

and i disagree with saying "bitcoin shares for not tech non geeks" because these days opening a wallet and using bitcoin is as easy as opening a paypal account. check out coinbase if you don't believe me. and although i don't like it but it is a good option for any newbie.