No, it would take more than the 1st overall of a mid draft for me to trade Demidov with what he's been showing this year.
The KHL is a stronger league than any of those the 2025 draftees are playing in, and he's been handicapped by his coach for most of this season.
Even if some of these draftees turn out as good as Demidov down the road, I still keep him. Why risk trading what seems like a guaranteed star for a very small chance at getting an even better star? There's no reason for Montreal to do this move.
Like others have said, I would actually combine assets to try and trade up to get a higher draft pick this year. With how the Habs are playing recently and Dobes, Demidov, Reinbacher, etc. coming up, I think the time for rebuilding is near its end. One last top 5 or top 10 draft pick would be great.