Before Verizon released a statement about updates for the Google Pixel and Pixel XL, people assume that those Verizon variant Pixel and Pixel XL phone will receive updates after tested and approved by Verizon. However, Verizon and it's also confirmed by Google said that people who bought those phones via Verizon carrier will receive updates on the same day the unlocked non-Verizon version gets them. Even those three bundled updates that you get with the Verizon version can be uninstalled without that having any negative implications.
This is very important, especially for security updates, that makes sure that your Android operating system runs the most secured version and patches any security vulnerabilities after those are discovered.
You can read more information about it here.