The current description for a Button Gutenberg block element is as such:
Prompt visitors to take action with a custom button.
As the element inserted is not actually a
Prompt visitors to take action with a button styled link.
Just so it is clear it is a link that just happens to look like a button.
Not sure about this. Kinda of misleading for an average user who probably expects a button like thing on the screen, no matter which html element lies under.
But the "average user" knows what a link is... This covers both said user and the developer minded people who also use GB and know what a button actually is.
I鈥檇 consider to add a link alias for searching it: keywords: [ __( 'link' ) ],.

There is now PR in #13933.
Most helpful comment
I鈥檇 consider to add a
linkalias for searching it:keywords: [ __( 'link' ) ],.