If Poitras was a top 10 pick I think people would be calling him a potential high end #1 C. Sure looks like that could happen.
What do you consider high end #1C? Top 10 in NHL? How long until he reaches that?
There are lots of #1C that he isn't likely going to slot ahead of over the next 3 years.
McDavid, McKinnon, Hughes, Point, Matthews, Bedard, Aho, Barkov, Stutzle, Larkin, & Eichel for starters. Then you have players such as Fantilli, Carlson (Anaheim) about his age.
Then you have a few other center icemen like Suzuki, Thompson, Couzens, and Hertl you have to think will be as good or better.
Long way to go to start talking like this about him.