I find the whole idea of people saying that it's "too late" to join Bitcoin a ridiculous notion. To me it's like saying it's "too late to get internet", "too late to join Facebook", or "too late to get a smart phone." "Damn, I missed out on that whole Internet revolution thing!"

A nonsensical phrase. At no point in time now or in the future will anyone be "missing out" on getting some Bitcoin.

If they mean that it's too late to make a ton of money with Bitcoin, then they need to re-evaluate their notion of what money is. Should I say, "Well it's too late to buy Gold because I can't get it for $0.10/oz. valuation like my ancestors were able to."  ? Whatever the current valuation is, someone is always buying and selling. Hopefully someday in the future with Bitcoin, there will only be buying (because we will swap it directly for goods/services and won't have to go back to fiat).