We don't have a choice. Avoiding centralized exchange means we will face many issues during buy and sell our cryptocurrency. Even do we care about our wallet privacy? Those wallets have been using could trace our IP address if you aren't using VPN or Tor. Even we want to keep our privacy but sometimes we are hopeless. It's too much hassle for a few people dealing with Bitcoin without centralized exchange.
That's certainly true, mate. A very small number of people actually care about their privacy. The rest are simply ignorant of what's happening in the real world. Convenience/ease-of-use is what matters most in today's society. It's no wonder why centralized exchanges and centralized wallet providers are dominating the crypto/Blockchain space. If people actually cared about privacy and decentralization, centralization wouldn't had prevailed by now.
Things aside, I believe that P2P platforms and decentralized exchanges are excellent for preserving your privacy. But they're often constrained by low liquidity and somewhat-high fees. At least, it's better something than nothing. As long as it's possible to achieve privacy with Bitcoin, there should be nothing to worry about. Just my opinion