I somewhat agree with him on this, but having missed Microsoft at $5 a share back in 1994, I've learned if you believe in a technology or the developer, it doesn't hurt to put a little down and then just wait for the technology to grow into itself. I did that with with Ethereum at $11 in early 2016, having just found out about it, and spending two days researching it.

Do your due diligence on the tech, the developer, and whether or not it's a disruptor in it's category. That helps you make the right decision, as to whether or not to invest it in the early stages.