Obviously we don't want Tavares at 0.5 PPG... but he's not at 0.5 PPG. He's hovering close to PPG. And even if he was at 0.5 PPG, him doing that at center or wing makes no difference, so might as well keep people at their optimal positions and at least extract extra things like faceoff value out of Tavares (which involves more than just practice).
In the unlikely scenario that we're incredibly desperate for a 2nd line center in 2025 and have no internal or external options, maybe we try out Marner or Nylander there, but there's no reason to start forcing players who excel on the wing into center positions in 2022 when we already have a center - still signed for at least the next 2 and a half years - in that role already.