It’s a system that’s clearly designed to make more sense with a large sample size hence waiting until the third month to release it.
There’s a reason they don’t release it week two. Because a team playing two games is going to be close to useless information.
A large sample size helps with every data system. That’s not something unique to the NET.
Similar to the RPI, there is one major flaw in the current NET formula. Making one tweak would create a ranking much closer to a true measure of strength, both now and at the end of year.