The dumbest part of that was Elliott didn't even say anything bad about Cousins. He was basically laughing at how much Duncan was dominating him.
But, yeah, I mean technically he's a good signing at the minimum on a cost per talent ratio.
However, he has the worst character in the NBA. Pouty, crybaby who always is whining about something. I wouldn't even say he's tough or good crazy (like SJax), Cousins is just a bad apple. With a team full of impressionable young players, he's the last person you want to add to the mix.
Even for basketball reasons, it doesn't make sense. Closing lineups will have Aldridge at center, so Cousins ability to help the team win games would be limited. Cousins and Aldridge together would be slooooow. Bringing Cousins off the bench, he'd have to be the focal point (or else he'd go into full pout mode) and the Spurs just gave Gay a lot of money to handle that role.
I'd be against Cousins for the minimum. Full stop. Even if the DeRozan begs RC and Aldridge tells his agent (same as Cousins now) to make it happen, my bet would be that Cousins gets waived faster than Ron Mercer did.