https://en.wikipedia.org/wiki/Virtue_signalling
>In recent years, the term has been more commonly used within groups to criticize those who are seen to value the expression of virtue over action.
This man appears to be taking action, and advocating action.
> Two decades ago I turned full-time to philanthropy and threw myself into supporting public education, scientific and medical research, and visual and performing arts, believing it was my responsibility to give back some of what had so generously been given to me. But I’ve come to realize that no amount of philanthropic commitment will compensate for the deep inequities preventing most Americans — the factory workers and farmers, entrepreneurs and electricians, teachers, nurses and small-business owners — from the basic prosperity we call the American dream.
Lately, I find myself in discussions with people using the term to mock anybody that demonstrates care for liberal cause. I'm happy to acknowledge the transformation of the term "virtue signalling" to mean "supporting liberal causes," if that's what you want the term to mean in your post. Of course, I'd abandon any presumptive negative associations with the action of "virtue signalling," then.