>>Who gives 50% earned to charity?

Perhaps some. But I'm sure they don't brag to the world about it.

Can you advocate for doing an ethical thing like that and not have it be considered bragging? I've often wondered about how to encourage others to give more, volunteer more.

If I don't do those things (or don't claim to), people will say, "Why should I do that? You don't do that! Hypocrite."

If I do those things, people will say, "You are just bragging/virtue signaling."

Both are defense mechanisms to prevent any responsibility to do something themselves.

More people should: https://www.jefftk.com/p/make-your-giving-public

(Written years before I started on ads at Google)