Agile is a phenomenon with lots of different manifestations that try to do their best at embracing the Agile Manifesto. Yes there is hype and people who make money of it. But that hype is justified by many examples of successful Agile manifestations.
Most important to Agile is to get it. To get into the mindset of feedback loops and collaboration. For larger companies with "non-Agile" habits, that is hard by default.