All likely to not play in the league for 3-5 years. Who knows what the center depth will look like by then. At that point, it may be a need and it may not. All things being equal I'd prefer more center depth, but if they felt this kid was a better player/fit then I'm all for it. In 4 years half this roster may be turned over.
Knee jerk reactions when you've never or have rarely seen a player is fine, but I wouldn't overdo it.
For every Mcilrath who the board didn't want there's a Derek Stepan that the board didn't like either.
Look at the Lias Andersson pick... they opted for the center and Stepan replacement and it didn't work. He wasn't the best BPA. If they had taken another position that panned out you wouldn't be sitting here years later thrilled that they took Lias over another LW or RD.