Across the world, yes, but in the context of reasonably well of people, no. There are other differences too.

The consequences of having more kids is very different for a subsistence farmer vs an affluent urban person.

> people in more precarious circumstances have more kids. I don't know why.

Did you consider that the judgement of precariousness of the people's situation is in your value system, and does not necessarily transfer to their value system? Especially this could be due to you having access to more information than them

isn’t your comment doing literally the same thing?

Actually I do not see the similarity. However it appears that you see disrespect where only respect was intended - could you propose how should I have conveyed the message in a way that would appear more respectful in your eyes?

Huh?

less educated -> less money -> less to lose + welfare benefits don't look too bad

Women who are educated about birth control and able to make those decisions have less kids. That is why - when women specifically have options they choose to have less kids and pursue own happiness.