It doesn't measure an actor's talent. A nomination awards the end result.
You can NEVER know why someone is or isn't nominated. You'd have to poll all of the nominating voters and then trutst that they actually remember why. (I also suspect people would be able to give you a more specific reason about why they DID vote for someone vs why they didn't. I mean, why didn't you order the pancakes? Because you wanted eggs.) As someone else said: five other people got more votes. THAT'S the reason.
If we're not having fun, then why are we doing it?
These are DISCUSSION boards, not mutual admiration boards. Discussion only occurs when we are willing to hear what others are thinking, regardless of whether it is alignment to our own thoughts.