Earlier quoted context omitted.
I don't want to spend a lot of time working on each point within your post. However I do think you discount the value that finance brings. Access to capital and efficient distribution of capital are tremendously powerful. Describing what finance does as just pushing paper is like describing the startup community as just writing useless code.
And I want to make it clear I don't consider Facebook/Google/Twitter as vital as GM/Boeing/Tesla/SpaceX. I don't care if Facebook/Google/Twitter don't end up with top brains. But I am concerned GM/Boeing/Tesla/SpaceX are not getting the top brains as much as they should.
So, yeah, finance is more vital than any other business.