My take is (and I somwhat agree with the article on this) that if you know requirements, interfaces and tasks precisely enough to give a reliable estimate, then

My take is (and I somwhat agree with the article on this) that if you know requirements, interfaces and tasks precisely enough to give a reliable estimate, then that means that the majority of actual development was already done. But thats just not the point where people typically want estimates, they want them much earlier.