amazon is not centralized because they have many workers?

is a government decentralized because it has parliament or people voting in it?

no that would be a crazy statement.

what is decentralized is multiple nations, experimenting with different laws in parallel.

or multiple companies competing in the free market in parallel.

or multiple bitcoin node implementations competing in the free market of node software, experimenting with different things, and live or die.

so yes some other node implementations, especially one that gives its bitcoin user more options, is decentralization.

one software implemented by one repo, can make changes to the protocol based on votes of few without competing in the market with other options is against everything bitcoin and decentralization.

monopoly over bitcoin software by a single collective is not decentralization.