I agree with Bron. It's never constructive criticism. It's stuff that's mostly emotional, and always when the young guys are doing something great.
Like when Oscar Robertson woke up one day and spoke out for the first time in forever just so he could shyt on Steph Curry during his 2016 season. Like, you really think the players now wouldn't adjust to the old days? You really think they wouldn't get used to the contact and adjust? And is that the only thing you can say when these players are showing insane skills that makes up for any rule changes (which are exaggerated).
You don't see NFL players shyt on modern guys nearly as much as NBA oldheads do.
The old heads also lack self-awareness. All the arguments they make ("the league is soft" "the players are ungrateful and earn a lot" "no defense") were usually all said about them.
At least Tim Duncan was constructive. He talked about the post game declining and unfair officiating. That's actually constructive. Not baiting someone on live television just to get a response.