When working on complex problems in complex environments, adding more resources (people, money, tools, etc.) cannot guarantee increased value or success.

Explanation
The Daily Scrum is a 15-minute event for the Developers of the Scrum Team to inspect progress toward the Sprint Goal and adapt the Sprint Backlog as necessary, adjusting the upcoming planned work1. It is one of the five events of the Scrum framework and enables the three pillars of the empirical process of Scrum:
transparency, inspection, and adaptation2. The Daily Scrum is not a status meeting, but a chance for the Developers to collaborate, coordinate, and plan their work3.
As a Scrum Master, you could help the Developers understand that lowering the frequency of communication will only increase the feeling of disconnect between the team members, especially when they are working from globally distributed locations. You could also coach the Developers on why a daily frequency is important as an opportunity to update the Sprint Plan and how it helps the team organize work toward achieving the Sprint Goal. You could suggest alternative conferencing tools or methods that are easily available and effective for the team. You could also facilitate the Daily Scrum by ensuring that it is positive, productive, and focused on the Sprint Goal.
Acknowledging and supporting this self-managing team's decision might seem like a good option, but it would not help the team to improve their collaboration and alignment. Having the Developers vote to make sure there is consensus within the team might also seem like a democratic way to handle the situation, but it would not address the underlying issue of why the team wants to reduce the frequency of the Daily Scrum.
References:
The Scrum Guide 2020, section "The Daily Scrum"
What Is the Daily Scrum?, A Guide to the Daily Event - Scrum Alliance
The Importance of Daily Scrum Meetings | Grata Software

The Scrum Master is responsible for ensuring that the Scrum Team understands the purpose and value of the Scrum events. Because the Daily Scrum is owned by the Development Team, it will decide how best to run the event. And if needed the Scrum Master will coach the team to ensure the decisions stay within the boundaries of the Scrum framework.

Explanation
B: Developers with an interest in Stella's domain could volunteer to take on this work in their respective Scrum Teams.
This is a good solution because it is consistent with the Scrum value of commitment, which means that the Scrum Team members are willing to learn new skills and take on new challenges to deliver value12. By volunteering to take on this work, the Developers can reduce the dependency on Stella, increase their cross-functionality, and collaborate more effectively within and across the Scrum Teams34. F. Ask Stella for a plan to hire and train additional people in her domain, and in the meantime work with the Product Owner and Scrum Teams to re-prioritize the work so that tasks not depending on Stella can be done first This is another good solution because it is consistent with the Scrum principle of empiricism, which means that the Scrum Team learns and adapts based on the actual outcomes and feedback, rather than following a predefined plan12. By asking Stella for a plan to hire and train additional people, the Scrum Master can help address the root cause of the dependency and create more capacity and diversity in Stella's domain. By working with the Product Owner and Scrum Teams to re-prioritize the work, the Scrum Master can also help optimize the value and feasibility of the product backlog items, and enable the Scrum Teams to deliver valuable and functional increments every Sprint34. G. Create a team with Stella and identify people from the Scrum Teams to temporarily work in Stella's domain to learn to better serve the existing teams This is also a good solution because it is consistent with the Scrum value of respect, which means that the Scrum Team members appreciate and value eachother's skills and perspectives12. By creating a team with Stella, the Scrum Master can acknowledge and leverage Stella's expertise and experience in her domain. By identifying people from the Scrum Teams to temporarily work in Stella's domain, theScrum Master can also facilitate knowledge transfer and skill development among the team members, which can improve their self-organization and collaboration34.
References: 1: Scrum Values | Scrum.org 2: Scrum Values - Atlassian 3: Scrum Guide | Scrum Guides 4:
Scrum - What is it, how it works, & how to start - Atlassian