I don't like it.
First off, it's incredibly cisnormative. A trans woman and a cis man can have a heterosexual relationship and be unable to have babies. Using the term "breeder" excludes trans people and implies their relationships are "different" compared to relationships between cis men and women.
Secondly, it's ableist. Some people can't have babies for a variety of reasons, and calling het people "breeders" sweeps infertile het people away and once again otherizes them.
tl;dr: I dislike it because it's cisnormative and ableist.