A website with links from 20 other websites seems more popular than one with links from only 2 other websites.
The quality of such links is assessed by search engines. They must be relevant to your website’s subject. e.g. A link from a casino is not relevant to a website selling ink cartridges and could cause Google to mark down that website. (This happened to one of our clients).
To find how many links there are to Platypus Websites, type “url: www.platywebs.com.au” in a Google search box. You will see that many links listed are from our inside pages and many are from other websites that we own. These all count in the assessment of popularity and therefore relevance to a search.