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From a speech to input user perspective it would be good practice to include the default link text/button label at the beginning of the aria-label.
A speech to input user can activate links on a web page by telling the software to click on links and buttons that the user sees on screen.
If a speech to input user want's to activate a button that says "Learn more" and an aria-label has been provided, the speech recognition software is going to respond to the aria label.
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