The "geriatric pregnancy" thing, it's also worth mentioning, is just another way to turn women into breeders. Your 20s are a very important time in your life if you're planning on having a career. If you delay having a career until after you have children, you're immediately in a massive uphill battle, and constantly under pressure to stay home with the kids in order to save on daycare expenses.
If you're 18 and considering college. If you put it off to have children, your best earning potential as soon as you're done having children is to be a nanny for those kids to avoid daycare expenses. It's not even close. So that's an instant trap. Even a college graduate faces a similar situation if they have children before getting a job. And then, when you finally are ready to start your career, there are a lot of questions about what you've been up to and whether you still retain what you learned in college, etc.
Telling women they must pump out kids in their 20s is the glossy way of telling them not to have a career. And these guys hate it when women have careers.