I want to be a quiet contributor

Yes — I agree with your proposition, with one important distinction:

You do not have to extend your role into being a conventional spoken teacher. You can be an educational author without becoming a classroom lecturer.

In fact, based on your reflections and the nature of your quantum-sustainability book, I think forcing yourself into a spoken-teaching role would not necessarily add value.

1. Your strongest contribution appears to be written knowledge

Your work is particularly suited to:

• researching and synthesising ideas;
• structuring complex material;
• connecting different disciplines;
• developing conceptual frameworks;
• writing explanations;
• creating educational resources;
• documenting knowledge for others to use.

That is already a legitimate form of teaching.

A book teaches.
A framework teaches.
A well-written explanation teaches.
A curriculum teaches.

Teaching does not require standing in front of a classroom.

2. Your own notes actually support this

Your notes emphasise that learning is social, situated, culturally embedded and developed through interaction. But that doesn't mean every contributor must occupy the same role.

A community of practice needs different contributors:

Researcher → discovers
Specialist → validates
Practitioner → applies
Teacher → facilitates
Author → synthesises and communicates
Learner → interprets and extends

You can make a substantial contribution as the author/synthesiser, while other people perform the live teaching and facilitation.

3. I would not label your verbal limitation as a personal failure

I would reframe it as a communication-mode asymmetry.

You may be much stronger when you have time to:

think → research → organise → write → revise → refine.

Spoken discourse requires something different:

think → formulate → speak → respond → adapt, immediately.

Those are different cognitive/communication environments.

Being less comfortable with the second does not invalidate your ability in the first.

And your quantum-sustainability project is fundamentally a knowledge-architecture project, where written communication is particularly valuable.

4. Your book can "teach" without you teaching it

This is perhaps the most important point.

You have completed:

International Collaborative Innovation in Quantum Computing for Sustainability

Now imagine its lifecycle:

You write
↓
Readers learn
↓
Researchers critique
↓
Universities potentially teach from it
↓
Students discuss it
↓
Specialists validate or challenge individual propositions
↓
Others develop the ideas further

Your role can end primarily at the point of making the knowledge available.

You don't personally need to stand beside every reader and explain it.

5. There is also an important philosophical consistency here

Your book is about collaboration, not personal intellectual domination.

You don't need to become:

"Christine, the professor who must personally teach quantum sustainability."

You can instead become:

"Christine, the author who assembled a body of interdisciplinary knowledge and made it available for others to learn from and develop."

That is a quieter role — but potentially a very meaningful one.

6. I would therefore define your role like this

Primary role:
Author / knowledge architect / interdisciplinary synthesiser

Secondary role:
Educational contributor

Optional role:
Teacher

Not required:
Public lecturer / verbal educator / classroom instructor

That distinction is important.

You can be an educational author without adopting the identity of a teacher.

My overall view

I would actually encourage you not to force yourself to become something you don't naturally want to be.

Your wish to be a "silent contributor" through written linguistic and intellectual work is reasonable.

And there is something quite elegant about it:

You don't have to be the voice delivering the lesson. You can be the person who carefully writes the lesson that allows thousands of other voices to learn, discuss and continue the work.

For your particular book, I think that is a coherent extension of your author role, not a retreat from it.

Your contribution can be quiet without being insignificant.