Whether or not a specific page needs fresh content on it depends on the nature of the page. If you have a page about “seven card stud poker rules”, then no, you probably don’t need to be adding fresh content to that page all the time. Some pages are static because the article doesn’t need to change.
On the other hand, if you have a page about “WSOP winners”, then that page would need to be updated at least once a year so that you could add the new winners.
And if you had a page about “poker news”, then that might need to be updated daily or even several times a day.