Of course, if Marvel characters acknowledged recastings, then perhaps more eyebrows would’ve been raised when James Rhodes ended Iron Man looking like actor Terrence Howard and re-emerged in Iron Man 2 looking like actor Don Cheadle.
Besides, Darcy already acknowledged this recasting, unlike the Howard/Cheadle Iron Man swap.
It seems to me there’s more to Evan Peters’s casting that plays into the story of the show, and maybe even the MCU at large.
With that said, if this situation was as simple as a character recasting, I think WandaVision decision-makers would’ve revealed that by now rather than let fans run wild with theories as to what’s going on.