I think they are/were, or at least some of them have been at some points in time during which they had a $1 salary. Although maybe there are different definitions of the word manager and I'm not really familiar with them all.
>Typically, responsibilities include being a decision maker on business strategy and other key policy issues, leader, manager, and executor.
>"We've never been ones to hold on to management roles when we think there's a better way to run the company. And Alphabet and Google no longer need two CEOs and a President," their letter said.
That was said when Larry Page and Sergey Brin were stepping back. So it seems to imply their old roles were management roles and their new roles aren't.