But it's not the tipping point after which it grows exponentially, no. It's the tipping point where people start fleeing it en masse to other technologies and undervalued cryptos. After all, why would you buy Bitcoin if you can buy something cheaper, which does the same, or even better - if you can buy something cheaper which does the same and then a few other things. Bitcoin was the bootstrapping crypto, now is the time for other technologies to take its place. It won't happen overnight, but the process has begun.
Has it not occurred to you yet that all the other coins have their value in BTC? Your statement is absurd.
Let me give you an example. There are hundreds of currencies in the world today. Most of them are worthless garbage, and one think they have in common that each currency has its value denominated in USD.
BTC is to altcoins, what USD is to fiat currencies. Capish?