Oregon will be fine.
Basically every Coach that’s been there since the 90’s has had success & they actually have a Football savvy admin that understands the landscape of CFB & how to make good hires.
They have a good financial foundation & they will continue to be a destination spot for talented recruits.
While it would be a shock if he left after just 1 season it wouldn’t destroy them like people would hope it would, they could replace him with another good Coach & keep on rolling.
They’re not pigeonholed by overly nostalgic homogenous prerequisites to hire a Coach.