I agree with it in the NFL actually. Franchise owners are typically old white men who value black players for their athleticism, but wouldn't trust them to make decisions. For example, the wide receivers, running backs are typically black, the Quarterbacks (who make on field decisions) are white. And if somehow you do end up with a black QB, typically they are characterised as a "running QB," i.e. someone who uses his athleticism to succeed rather than his brains/decision making. Good white wide receivers are "scrappy," or "intelligent," whilst good black wide receivers are "freakish" athletes.
Also, the NFL and America as a whole, has a whole lot more black people playing the sport. Mike Tomlin, who is a very good coach, probably got the head coach job at the Steelers based on being given the opportunity by the Rooney Rule, and I honestly don't think he would have got the chance if not for that.
Conversely, in England, this is just gonna mean Paul Ince gets interviewed for the England Managers job once every 5 years. A better solution would be to implement the rule at Championship and below level, giving black managers the opportunity at a club, to make their names for themselves from there.