He's the rub. NOBODY said he "was so awesome". I think most are saying, "he's a legit #3 receiver". IMHO, there is no way he hits 1,000 yards receiving. Not with Puka and Adams in front of him. 600-800? Sure, I'd take that any day.
As far as your question, no it's not "valid". Puka is a stud and Kupp is one of the best all around WRs.....when healthy.....whick hasn't been much lately. On top of that, he's hauling in 26 mil in 2024, so no, it's not a legit question. Why did they go get ADams is even worse. BECAUSE THEY LET KUPP GO. It's got nothing to do with Tutu.
And I'm not offended by it. My intelligence is but not me, personally.