I'm not skeptical that they would be interested, but a team like Montreal may be looking at maneuvering at the draft. They are probably looking to both make trades for (ideally young) NHL caliber talent and add prospects through the draft. They currently have picks 16, 17, 41, 49, 79, 81, 82 in the first 3 rounds. If they need more draft capital for a trade or two, they may try to move down to add a pick or two. Something like 17 + 41 for 24 + 25 generally matches pick values, gives Philly a higher 1st and gives Montreal and extra first to use or include in a trade. They just wouldn't be looking to make that trade.
Definitely would wonder if there were certain teams that might look to do what Buffalo did at last year's draft. Buffalo wasn't in the market for a D so they gambled that they could trade down. If they had stayed put and taken Konsta Helenius at #11 nobody would have batted an eye. But they were able to move the pick for #14 and #42 from San Jose. They still got Helenius at #14 and then they were able to trade #43 (their own 2nd) in a separate deal for Beck Malenstyn.
Vancouver at #15 seems like a wild card. Sounded like they were open to moving the pick for immediate help. Dunno if they could do a two step trade like they did with turning part of the J.T. Miller return into Marcus Pettersson.
Hypothetically:
Philly: 15th overall
Vancouver: 24th overall, 40th overall, two cheesesteaks
Vancouver: Timmy Secondlinecenter
TBD: 24th overall
Although it might be easier without Philadelphia as the middle man.