The issue must be that computing power evolves at a faster rate than aircraft design & procurement - and in the case of the F-35 the basic shape will be 15 years old before the plane is in service
Computing power will be enormously more effective and costs will be a lot lower (which is more than you can say for the F-35) so the "stealth" we're hoping for just won't be there
Fine if you intend to bomb Chad but against the Red Hordes it could look pretty sick