Compher was Colorado's 2C, and MacKinnon was their 1C. Rantanen was their 1st line winger. Cale Makar was their 1D. I'm sure you can surmise how they didn't need Compher's offense at all in that situation.
I'm not even saying that I expect Danielson or kasper to become PPG players. I'm just saying, in order for a rebuild to be successful, some of the picks have to dramatically outperform expectations/their draft slots. Pro sports are a zero-sum game - in order for one team to improve, other teams have to get worse. So it's not enough to just have your 9th overall picks be average 9th overall picks, beacuse every other bad team also will likely have average 7th or 8th or 10th or 11th overall picks. In order for us to become contenders, some of those picks have to knock it out of the park.
Maybe that happens with Buchelnikov becoming Kaprizov or Kucherov 2.0, or ASP becoming Zubov 2.0. Or Danielson being a PPG Selke-level centre. Either way, we need a couple of these to happen to become contenders. That's just reality.