I'd tend to agree with what I believe your position is.. a player (particularly linemen) who's just getting laid out every play is pretty much useless, regardless of his metabolic conditioning level. Runners who can't drive into people wont go far. Etc.
But like I said before in regards to bad programs... I know of one school in particular whose given training is really bad... the S&C guy even throws in random stuff for seemingly no reason.. and has gotten at least one kid fairly grievously injured because of it.