Always appreciate the debate and if in the end you want to think Carr needs to show you way more for you to believe, that's your absolute right.
And I will agree that he needs to get his timing right with Ruggs -- there was that 40 yard bomb he overthrew where if if he just hit his back shoulder correctly, that would have been a TD. And that was on Carr all the way, Ruggs had a clear step or two on the defender.
But that's one throw. I'm glad the Raiders are opening up downfield as I think it plays to the strength of their players -- receivers AND Carr. I don't think we had the horses to get open on streak downfield plays since 2018 (even Cooper didn't translate his combine speed into a consistent big play threat for us).
To the bolded part, you asked for it, so here it is:
https://nextgenstats.nfl.com/charts/list/pass/team/season/week/derek-carr/CAR358797/2020/2/pass
For passes over 10 yards, he completed 5 (including one for a TD - a throw that had the perfect touch and put in a place where only Jones could nab it. He had 4 incompletions. Just as I can't say he's perfect on long throws, I don't think you can say he doesn't get downfield when needed or that he can't complete them.
Here's another:
https://nextgenstats.nfl.com/charts/player/season/derek-carr/CAR358797/2019/all/qb-grid
Not only is Carr's rating good on plays over 10 yards, he is much better than average -- and particularly on either side of the field on throws that are 20+ yards. So he can and does complete them at a rate better than most.
You complain about just focusing on Waller, He spread the ball to 9 different receivers in Week 1, and 11 different receivers on Monday. Should he simply ignore Waller because the guy is a stellar player? If Waller gets wide open at the back of the end zone, should Carr target someone else instead of hit him for the 3rd TD of the night?
It's your right to be a doubter. You are right that Carr can and should continue to get better and tighten up his timing and instinct to go deep if a player is open. You are right he has some games where the bulk of his passes are 10 yards or less from LOS (Week 1 was one of those games).
But -- with all due respect, peace and love to a fellow Raider Faithful whose opinion on this board and in this thread I respect -- coming out of a game like that, where Carr played as perfect as a game as you can, helping the team come back from what looked like sure defeat early to beating one of the best Ds in the NFL -- and you focusing criticism about his performance and ability and wanting him to show you more, makes me think you are being too myopically glass-half-empty.