RE: the bolded part: Then why don't we just wait a few days until the trade deadline to see if something like that takes place before skewering everyone and everything over what seems to be a preliminary/minor roster-balancing move?
I get it. You want clarity. And as I think you are one of the most intelligent, thoughtful, and respected posters here, I agree with your overall opinion in general.
But I also think you really aren't going to get what you are looking for on this particular move. Nobody is going to come out and say, you know, "getting Dennis was really stupid on my part" (or, as some think is more likely, "getting Dennis was the price we had to pay to finally convince Vivek to actually rebuild"). Nobody will say "Hunter is our backup plan for the rest of this year and then we're using him as an expiring." You as much as anyone should understand that those kinds of statements just aren't happening.
Obtaining a "distressed asset" big at the cost we paid (assuming Keon was already gone for whatever reason, which seems logical) appears to be pretty much a break even or slightly beneficial move on our part to free up PT for some guards and give a little boost to our frontcourt depth. It appears by all accounts he's not going to mess up our drive for the worst record in the league, which is what everyone here is clamoring for. We may have just found Golden State to be impossible to deal with so we pivoted for some shorter-term help in roster balancing.
Don't get me wrong. I'm not saying I think this move is great (heck, or even "good"?). I think it is likely neutral to slightly beneficial, just from a roster balance standpoint if nothing else.
But you're the one who keeps harping that trades are so difficult to make now, with the focus on not giving up FRP and keeping within budget caps, etc., etc. So, a minor trade to get longer and relieve a logjam in the backcourt may be just that (instead of some final keystroke to solving all our ills).