I agree with this, it might happen that OP is more expose where Bitcoin is being traded in a centralized exchange but nothing in fundamental changed in Bitcoin. Which means that if it happens that centralized exchange fails at some degree, bitcoin can still operate and maintain it's value because it is more likely to operate according to original purpose. There is no middle man or institution in between, only P2P.
Bitcoin turn away from its purpose? I could remember vividly that we're the ones that have full access to bitcoin and use it for our measurable means. P2P is very strict and recommendable but for other developing countries, they've watch and observed bitcoin to be huge threat and will denied their citizens access, thereby led to ban. Exchanges ranks first and they've always lead because they've fuel up liquidity. Bitcoin is prioritized by many investors in the space but we should remain mute when it comes to making choices.