It wasn't like that before. But when they entered the american exchanges, they became more centralised. But if you are not living in us, there won't be a problem for you.
NO. They started becoming centralized the day we started using exchanges and KYC became mandatory everywhere.
You know your government is getting all the details regarding everything you do related to Bitcoins, from your trading history to your deposits/withdrawals that you do, if you're doing it using an exchange as these exchanges give our KYC documents and history to Government to keep compliant with their Anti-money laundering rules. You know that, do you?