What I believe parent is saying is that introverts would prefer a different venue for idea sharing than one where "whoever shouts loudest and fastest is heard." Which is very different from not speaking at all.

For example, something where folks ask "please post your papers and ideas to this shared document repository where they can each then be read by the team at whatever pace is required."

A collection of folks read the documents, write about which ideas they like, then make a decision based on the contents raised in said papers, all over text mediums.

Something like that is an alternative to a world where whoever speaks loudly fastest, and to the right people, has their idea taken seriously.