Question about plugin submission

I’m writing a plugin that connects to a third-party API. When users sign up for the API key, one of the requirements is that they display attribution on their site to the party that is providing API access.

As I was reading through the plugin submission guidelines, I came across this:

The plugin must not embed external links on the public site (like a “powered by” link) without explicitly asking the user’s permission. Any such options in the plugin must default to NOT show the link.

Seeing as users already agreed to display attribution on their page when they signed up for the API key, do I still need to have an option defaulting to NO for displaying the attribution?

Thanks