When we start ignoring all the services which are asking to clear KYC, we could solve this. But, in this busy world everyone (including myself), goes for KYC mandatory services (for exchanging, gambling, etc) for quick and ease access and killing the true purpose of bitcoins.
We must develop community based P2P exchanges to skip centralized exchanges and should support only gambling services which are promising about No-KYC-forever. I guess we cannot lead a life without dependent on any of centralized services but we could stay anonymous by protecting our privacy/identity to ensure the decentralization.
Bitcoin itself is fully decentralized as it was created for peer to peer cash transfer. There are coin like XRP, USDT, BNB that are created by centralized institutes and they have the control to manipulate the blockchain. While nobody can control or manipulate the BTC blockchain. Exchanges that require KYC are not part of Bitcoin decentralized ecosystem.