Ok, let's wrap this up. That text mentions there are terms for American Express benefits offered, and some require enrollment.
It also tells us the 'The Business Platinum Card® from American Express Review' is a post on Nomadic Matt's Travel Site blog.
In short: Ad disclosure matters with Amex cards like this one; check the terms if you're interested in any benefits. Plus, their review was published on that travel site's blog.
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Nope:
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American Express does state there are Disclosure Term