When a defense is selling out to stop one player using doubles, triples, traps, jumping screens, and hedging to that players side of the floor, the only way to defeat that defense is for the other players to punish it by scoring consistently. CJ can't do it; Mo and Aminu can't do it'; Kanter, Meyers, and Zach can't do it. Hood made a good stab at it but he can't do it
Portland needs more talent and they have to recognize something critical: teams get a two-fer for using that defense on Dame: one is that they take out the best and most efficient scorer Portland has; the bonus is they shut down the only guy who can consistently run the Blazer offense, such as it is
Portland is vulnerable when a 6'2 guard is their #1 scorer and #1 playmaker/facilitator. Dame is by far the best player, but he has limitations and Portland's reliance on him leaves them a shipwreck when a good defensive team takes Dame out of the flow
what Portland needs is another player, preferably a wing, as talented as Dame so an opponent can't sell out to stop Dame. CJ isn't close to being that player, and of course, getting a player like that is a real long shot
The Warriors couldn't use that defense if Portland had Kawhi or Paul George to pair with Dame. But those ships have sailed, if they were ever even close to port