Pinterest spreads posts service?

The following thing. I see at a competitor that their images and articles on Pinterest have been pinned on over 50 boards.
These boards all have the name of a keyword and most importantly those are from Pinterest from different top level domains.
.fr
.de
.se
.ch
.at

But his pictures are only in German which is why these boards don't make sense.
Is there a service that creates boards on different accounts and pin there only the my pins?

There are a LOT of strategies on Pinterest. Some users do anything, stupid things, testing many strategies, etc.
(you remind me this https://www.blackhatworld.com/seo/pinterest-journey-340-active-accounts-to-10k-monthly.1118004/ )

Many local/online pinterest automation softwares allow to create boards on the same account and pin on them. Creating boards on different accounts, I don't know... Personnaly I use Pinflux