Why does it take so long to update a Zestimate once I claim my home?

"Your updates will be immediately factored into your home’s Zestimate and if they are significant enough, you’ll see the impact on the Zestimate right away. The Zestimate is automatically computed three times per week based on millions of public and user-submitted data points. In some cases, the altered data will affect the estimates slowly over approximately two months. The good news is that because you corrected or added specific details, those details are going to give us a more accurate starting point to determine your home’s true value. I’d like to give you a heads-up, though: If your updates aren’t significant enough to impact the home’s value, your Zestimate might not change."

~Provided from Zillow.com Scripts