It helps them before 2028 if they return picks for 2026 and/or 2027 for one example.Might as well keep them for a couple years. Losing doesn't help them until 2028.
Rebuild is going to take years because they have to develop most of them after they're picked.
Filling up the prospect pipeline with lesser prospects helps as they take longer to develop.
Some of them may be traded to move up in a draft, etc.
McCabe, maybe OEL or a goalie for example could get them a 1st rounder now.
Bruins got more for Carlo and the Flyers got more for Laughton because they were not about to be UFAs.
The minute a GM knows it is time to blow it up, the better the return and the sooner the rebuild completes.
As well, it is probably a great year this year to be a seller because so many teams are not eliminated - it is a seller's market so the bidding and overpayment gets even more silly.
I'd trade anything with a pulse except for the youngsters and even then, I might be persuaded depending on the offer.