You can propose changes to the network at any time via a BIP (Bitcoin Improvement Proposal) [1], so sorry, but you're just wrong. Bitcoin is the most ethical form of money that has ever existed.
> "All landowners get a vote according to the amount of land they own. Work for scraps you peasant."
This is an impressive contortion of reality, but nonetheless completely wrong. Your "voting" ability has nothing to do with participation in mining. Your vote is participation in the network, open ability to submit proposals, run a node to bolster the network, and if you wish, run a mining rig to validate blocks and earn Bitcoin. You can also earn Bitcoin from others directly providing products and services.
I don't agree that "the best ideas win." I certainly don't agree that the halving system is a "best idea." It massively and almost permanently privileges early adopters, creating a landed gentry of the modern world in a completely unjust. The ideas most valued by a particular set of people (either the core devs or the miners, depending on how you define BTC) are what wins. That's aristocracy.
I'm glad you got rich as shit off BTC. That doesn't make you a good person.
That's not democracy.
"All landowners get a vote according to the amount of land they own. Work for scraps you peasant."
Unethical nonsense.