That is absolutely true. The question, though, is whether the OP's fixation on having kids _is_ a goal, or if it's just a manifestation of dissatisfaction with the status quo. They're at a stage in life where probably most of their friends and family (of their generation) are parenting. It's easy, when depressed, to look at others who you see as happy and ask, "what do they have that I don't?", and in this case, the most glaring answer may be "they have kids, so I should get kids too!".
This isn't to say that the OP is wrong, but rather that in their communication, they focused more on their longing than their parenting, implying that the want of parenting is more important to them than the parenting itself.
Consider also that this thread didn't come from a day's ponderings; it's a reaction to another article about how most of the time spent with children is before the child reaches 12 (as quoted in the OP). Such a trigger could suggest more fear-of-missing-out than inherent regret.
> they focused more on their longing than their parenting
I never wanted to parent (that's simply a necessary constituent part), but I've always wanted to have kids, a family, a legacy, teach them, raise them, provide them a warm safe cozy family environment (that I remember from my childhood).
So far I'm very happy with the decision and 0% regret (only 10 months in though).
The solution, then, is to figure out a way to achieve them.