"Do I need to worry about potential future employers finding this?

No.

Indexing by search engines is fully suppressed by robots.txt and <meta> headers (not the company Meta, here it refer to an HTML tag). A potential employer searching your name will never see this page via search engines like Google or Bing."

The author assumes some employees are not familiar with <meta> HTML elements and might confuse them with the name of their employer

HN commenter: "I did a double take when reading that part too, but if you're a Meta employee then you should be able to understand the implications of those technical measures."