I've read a bit of this and then glanced at most of it.
The question of size will always be here, one size don't fit all and if Mr Nuttall, i don't know him at all so will give him the respect, his age and standing in the terrier world deserves, thinks that tiny ( not usefull sized ) terriers are the answer to controlling underground vermin then that is up to him. I saw one in a blokes kennels 6 years ago and was disturbed by the puny fecking thing, my 12" Border would have nearly made two of it and yet the bloke told me, and i have no reason to dispute him, that it worked 'cock on'.
T