Help with Pinterest backlinks

Hi.

Many times when I check some site backlinks, Pinterest backlinks are on the top wtih shares on different countries uk. es. ... Also, this are shared from links, not from their own profile.

How do they make this kind of links on so many diferent sites? Do they create diferent accounts?
Also, is it important on which account is shared? It should be aged for google to see the backlink?

Thanks

These links cannot be considered as powerful links. As pinterest is a social media platform, I would count those shares and links as 'social signals'
But as per my experience, these social signals help you in indexing your page faster. Don't expect any ranking boost with those links.

The country specific links are autogenerated by Pinterest. they create a pin only once and pinterest shows different domains for different bots based on country.

Agree with @Kinu Actaz and @GTC .

If you keep posting pins and grow your Pinterest account then over the period of time these links will automatically built. No special efforts are needed.

Thank you @Kinu Actaz , @GTC , @sageshark for your explanation