> Ethereum is an extremelly centralized business
The development of Ethereum is more decentralized than the development of Bitcoin. Bitcoin is primarilly developed by Bitcoin Core while Ethereum has multiple client implementations.
Anyone can join the Core Devs meeting and discuss new features and push back on ideas. You can also propose these features outside of the core dev meetings and never attend that meeting if you don't want to.
New ideas aren't centrally proposed and are handled by raising an EIP and getting support for it, just like BIPs in Bitcoin.
For example, EIP 1559 was dead for years until a community member decided it was time to push it and worked with many different people to present it in a way that convinced multiple teams to implement it in their client.
The validators can always reject a change just like Miners can reject changes to Bitcoin clients. The big difference is that Bitcoininers don't have many clients to choose from, so they have to be more willing to accept whatever Bitcoin Core implements.
The bug difference between BTC and ETH from the SEC perspective is the initially issuance being an investment of money, and whether PoS is a return on investment or if running a node is similar to running a PoW node and you're providing a service and not simply expecting a return. In other networks, you can "stake" without running any hardware and that's clearly different than Ethereum's PoS model.