Product pages - Add tabs to product descriptions

TyW, i’m curious, why the following?

In the second tab, render a snippet (make sure to create a new snippet and call it “shipping”), mainly because this will contain content that you do not want indexed by search engines, or to come up in a site search.

In the third and last tab, place the content of the Returns page. It doesn’t matter if that comes up in a search or is indexed by Google.

Why concerned about the shipping info but not returns info?

Also I assume that render adds some kind of no index property to the content?