Facebook is prominent, is tech and can impact morality. Exactly what the author is claiming. You are saying that it's "...obviously the most important piece of

Facebook is prominent, is tech and can impact morality. Exactly what the author is claiming. You are saying that it's "...obviously the most important piece of technology..." but the author does not make that claim. If you aren't familiar with a straw-man argument your last sentence is a textbook example.