No, a sensible fan will go to watch his team (a team of ELEVEN) rather than watch one 'sub-standard' player. A sensible fan will not boo a player on their every touch. A sensible fan may not agree with some of the personnel at the club but will be realistic.
Yeah hopefully he gets a bad injury, then 'Blunderwood' can bring in Daal, Pasquanelli, Craig, Deuchar, Prunty, Hinds, Mike, D'Jaffo, ZDrillic, Sebo, Blaha or anyone else you have deemed better than Mackie.