It's undeniably true that estimates are often driven mostly by what number will be acceptable. But it doesn't invalidate the points the article makes. Even when this distorting element of business drivers are removed, estimation is still very hard.
You might get reprimanded if you give accurate estimates - that doesn't change the fact you mostly can't give accurate estimates even if you wanted to.
You might get reprimanded if you give accurate estimates - that doesn't change the fact you mostly can't give accurate estimates even if you wanted to.