Well I’m not seeing them being a jerk to anyone here, but what you describe definitely also sounds explainable by the constant pro-kid information we are force fed. It’s why this community exists, it’s why this is a thing, it’s why this debate happens. If most of society wasn’t judging us, exactly the inverse of what you’re claiming here, it would seem as out of nowhere and dickish as you suggest. But the vast majority of people will either silently judge you, talk about you behind your back for it, or put pressure on you overtly. I’ve had coworkers repeatedly tell me I should have kids and I witnessed another coworker finally snap at a different coworker who was telling him he needed to have kids, after what you could tell was years of needling. This is insanely common. It’s why there is a backlash to it. The backlash is a tiny fraction as bad as the norm of shaming and judging.