So the positions the current maintainers hold can be replaced without access to Bitcoin Core’s GitHub repository?
Part of being a maintainer means having access to the repository.
Ford oversees the build system
Gloria Zhao writes and reviews the code that governs Bitcoin’s transaction validation process
Andrew Chow is in charge of programming for crypto wallets, which allow investors to store their bitcoin
Marco Falke focuses on testing
Stepanov maintains the network’s graphical user interface
This is the second time you're copy/pasting the same text straight from an article. I imagine you are trying to make a point. You should just make it.