What the hell does a Link to F1 have to do with keeping an engine?
It has to do with marketing. The V-10 had a link to F1 when F1 cars had V-10 engines. BMW liked to \"link\" the V-10 in the F1 car to the V-10 in the M5/M6 even though the two obviously shared no parts.
you can get all that stuff from a V10 also.
It is easier to get better fuel economy with a smaller, boosted V8 than it is with a n/a V-10. The hp/torque is easier with forced induction than with n/a.