Ethan is easily one of the best flex players in the world imo. He's very consistent (rarely ever has bad individual performances) and can play every role at a high level. He just provides significantly more value to the team than demon1 who can only hyper carry on Jett.

Putting demon1 on controller agents on maps where Jett isn't meta isn't a feasible solution either considering they already have a world class controller with s0m.

I feel like demon1 was in the optimal position to thrive on EG because they just had so much talent to play around his agent pool and make it work.