it is just the principle that people should abstain from reproduction.
Which is griping about reproduction followed by trying to shame people when they don't take the same principled stand. And a quick visit over to the sub shows a few people taking principled stands for themselves and a whole lot blackpilled edgelord "I hate breeders" horseshit. And sure enough there's a different post on the top page ranting about parents with disabilities having kids. Which sounds like.... what?
The people that have hard opinions about reproduction are acting like eugenicists in that sub.