/fa/ - Fashion

They market to blacks because black men shop like women. That is why they are featured in clothing ads, generally.

In Poland, though? Well part of it will be you are just getting ads that were made in countries where they market to blacks. They're not likely to shoot a whole new ad campaign with Polish dudes just for the Polish market.
But you are also correct in believing there is social engineering involved: Poland is being prepared for multi-racial enrichment.

They want your people to think it's weird NOT to have black people everywhere.
This seems to have been successfully done in Australia.
An Australian normie of today would think that if a group of people does not exist in Australia: there must be racism involved.
They have been persuaded to believe all groups on the planet should have a presence here.