For the corporate logo stuff, I don't think you can use any of that at any point. It seems fishy to use trademarked logos of private corporations without their explicit consent.
Complaining about "ridiculous" licenses that people put on their free stuff, seems pretty rude to me.
if i'm wanting to use icons like Fontawesome or some such that are part of the UI that function as buttons or whatnot and something much more than just there to be pretty, expecting an attribution byline under everyone is just never going to work in the sense of a UI. if you're an icon maker, surely, this is understandable. Fontawesome doesn't require the attribution per use or per page[0]. So it is totally doable with out sounding like some self righteous know it all on the interwebs. Now, if you're using a giant icon as the focal piece of the art on your page, then the layout does absolutely allow for immediate attribution of the graphic just like photos.