It’s not like they couldn’t be chosen, they have some serious stake in it. Consider their achievements and read the following :

Here are some key qualities a potential successor should possess :

• Deep understanding of the Linux kernel: Intimate knowledge of the kernel’s codebase, architecture, and development process is essential.
• Proven leadership skills: The ability to effectively guide a large team of developers with diverse technical backgrounds and priorities.
• Strong communication and collaboration: Excellent communication skills to bridge the gap between developers, and foster a collaborative development environment.
• Technical merit and reputation: A well-established reputation within the Linux community for technical contributions and code quality.
• Vision for the future: A clear vision for the future direction of the kernel, ensuring it remains relevant and innovative.

I’d say they meet most if not all of them. All of the potential candidate’s are amazingly talented and determined individuals.