Because they did and it was an epic fail?

The biggest fear with Drouin at C is that the center spot comes with a bigger defensive responsibility for the player.
However due to a lack of options I agree that maybe we could give him a try as long as we have at least 1 defensive rock like Lehkonen or Armia on his wing at all times to cover up for Drouin's defensive miscues.
I think we should try Poehling first then Paquette second before we resort to Drouin at center thou - IMO
Who knows maybe Drouin with Anderson could turn out to be as good as Domi with Shaw was for up back in 2018 when Domi wasn't a "true center" either

Suzuki #1
Dvorak #2
Poehling or Evans will get #3
If Poehling doesn’t get #3, then Laval
Perreault > Paquette
It’s probably going too be Evans #3
Keep Drouin and Hoffman on the Left Wing
One of Toffoli or Anderson on the first line with Zuke and Caufield