I think someone like Nutti or Murray would be able to step up and play with Jones. It's not like Werenski is eating PK or late game minutes. Torts and Shaw still have to watch the minutes they feed Werenski so that he's effective offensively and on the PP. Its not that they don't trust him they just have better options. That could and probably will change over the next season or two, but it's worth noting that it's still happening. Obviously Murray or Nutti are gonna put up 15+ goals or flirt with 50 pts every season, but it would be a lot easier to allow them to move up a spot and then fill a hole on the 2nd or 3rd pairing.
And then bringing in someone like Draisitl or Eichel or whoever of that caliber then forces Dubois and Wennberg into their proper slots in the lineup. Not only that, it breeds competition for those spots, especially if someone like Stenlund can come in and at least make a run for a 3rd or 4th line spot.
I don't think if I'm Jarmo I'm actively shopping Werenski, but I'm not just gonna automatically dismiss offers for him unless they're way off base. Jones and Panarin are really the only ones I shutdown automatically.