Pete,
I'm not looking for a row but the last paragraph is a cheap shot IMHO.
You and some others might not choose to volunteer to Steward or to give up your own time to acquire qualifications in crowd safety and that is your right.
However some people do and then give up even more of their own time to sort out the organisation of games, speak to and meet with the Council, Police and other Clubs, arrange additional stewards, turn up over three hours prior to kick off to ensure the ground is safe etc.
We might or might not agree with the implementation of segregation or the extent of any sterile area but, having done the job some time ago, I'd not want to do it again but I am grateful that someone wants to do it otherwise we'd be playing behind closed doors