When someone links to you, some search engines date the link.
So, if a website linked to your site 5 years ago, then the search engines
would know that you have a link with a long history. On the other hand,
if a website links to your website today, then the search engines would
know that its a fresher link.
So, all things being equal, it is better to have a link for 5 years than
a simple link for 5 days. This is just something else to take into
account as you work on your backlink plan.