who is gruber.. Forgive me for being naive..
Though, in any case, one thing you can be sure of is that when he blogs about something, it gets significant attention in the tech sphere. You wouldn't be able to link a fix directly to him afterwards, but I think it's fair to say that his blow-horn is loud enough to have some influence.
EDIT: No, seriously. If someone has no idea who Gruber is and they click through to his site, tell me where on the screen they would see information that answers the implicit question "Who is Gruber and why would him finding out about this problem aid its resolution".
I retract my snark, or at least a little bit of it.
Google "Gruber Apple" is your friend.