Parents with too many kids, with more than they can handle, should not complain of being a stressed-out. Firstly, it is not the fault of the kid that you did not intelligently plan your family. Secondly, being an adult you should have known of the consequences and the many years of responsiblity attached to being a parent.
The thing I detest is when I see parents failure to juggle their job responsibilities and being a parent would complain about being stressed with dealing with their kid’s tantrums, noise, mess and all those things kids do by being kids.
My take on it, before pulling down your underwear, the parent (or would be parent) should take note of all the issues (not just the cute stuff babies do) and hard work in taking care of a baby. In advance they should know how to balance life, work, and parenting.. and if everything can run smoothly, that can be the right time, IMHO.