--snip--
Can Bitcoin continue as usual without a hard fork and without the core maintainers and their access to Bitcoin Core’s GitHub repository
Yes,
1. People could just run current or older version of Bitcoin Core.
2. People could switch to different Bitcoin full node software.
3. Developer could clone Bitcoin Core's and setup new repository with different management.
--snip--
A hard fork is out of the question since it will not be Bitcoin anymore.
Depending on what hard fork does (e.g. change total Bitcoin could be mined), i would agree. But such argument (without additional detail) also used when debating Bitcoin soft fork.
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.
I agree with @nutildah, especially because OP ask similar question many times.