As a playoff mercenary, I would say yes to him being worth a 1st rounder.
His playoff stat line is 29GP, 11G, 12A, 23PTS.
Now, do teams in the playoffs think that's an upgrade on what they already have at wing...I don't know.
Just looking at the numbers one would think he would be a good addition, but maybe teams have a different take on him.
And just to be a jerk, would one rather have playoff Ehlers or playoff Boeser?
Ehlers is 37GP, 4G, 10A, 14PTS.
It just seems a little odd that with the cost of acquisition that Boeser somehow didn't meet that bar.