What you say about mTORC1 is not supported by the leading academic researcher organizations in the field of nutrition.
https://pubmed.ncbi.nlm.nih.gov/27886704/ "It is the position of the Academy of Nutrition and Dietetics that appropriately planned vegetarian, including vegan, diets are healthful, nutritionally adequate, and may provide health benefits for the prevention and treatment of certain diseases. These diets are appropriate for all stages of the life cycle, including pregnancy, lactation, infancy, childhood, adolescence, older adulthood, and for athletes."
If you think you have greater scientific expertize about this then I urge you to pursue a career in the related fields, publish your scientific evidence in the top journals and eventually change the recommendations. Until you accomplish that me and everyone else reading this should rely on the position cited above.
> political panels who are sticking their finger up in the air ...
That is not the situation here. The climate policy recommendations on eating are based on the best current scientific evidence. See https://eatforum.org/eat-lancet-commission/