So we've covered Google saying you can rank without links which is why Google's Gary Illyes was asked about it again on Twitter. Gary's response was refreshing, saying that "if you care about that page at all, you should probably link it from the site."
In short, if you want the page to feel love, show Google you care about the page by linking to it. Links are a strong signal and if you have no links to a page, both internally and externally, that shows the page isn't all that important.
Here is Gary's post on Twitter:
@ericserdar Yeah, but if you care about that page at all, you should probably link it from the site, too
— Gary Illyes ᕕ( ᐛ )ᕗ (@methode) April 3, 2017
This is obvious to most SEOs but after all that debate around pages without links ranking, it is good to see Gary post something like this.
Forum discussion at Twitter.