I'm not going to argue the toss with you about hair cuts, I have ridiculously long uncut hair. But my point is that even debt management folk and creditors realise that you need enough money to live on, not just survive on.
Credit cards and unsecured loans are not priority debts. There is no need for people to be living in dire poverty until they are paid off. It can be spread out over a slightly longer term (as long as the interest has been stopped - if their credit rating has already taken a hit through defaults - or via switching/tarting to keep interest low/zero if you still have access to credit). As long as the problem is being dealt with, i.e. the capital is being paid off as well as the interest, you can work towards a debt free date.
You may personally think that people should put their lives for however long it takes to be debt free, and maybe that is something you'd be prepared to do. But I don't think its realistic or fair to expect people with children to cancel christmas for example - which isn't the same as saying 'yes, go ahead and have a lavish christmas on credit'. It is only money after all, and in our monetary system, it never existed in the first place, no saver is having to wait 5 years rather than 4 years to withdraw their savings because you are paying it back to the bank over a longer time.
The important thing is to get free, expert advice (I keep mentioning CAB because they helped us, but I understand their funding has been cut and so they may not have the resources they used to) about the best way to manage your debts, with references to your aims (being debt free as quickly as possible perhaps, or maintaining as good as possible a credit history, or making sure that your budget isn't stretched so thin that you have to live on beans - whatever). Debt isn't bad. Bad debt is bad.
I say that as someone who lived very frugally before our debts were managed properly, and still frugally for most of the time we were repaying them back as quickly as was sensible and someone who is glad to be debt free. I am glad that we are past the times of debters prison and indentured labour and that people who have fallen on hard times are treated with more compassion - even if not everyone thinks its a good idea.
Before taking a moral view of people who end up in debt (and it isn't just a case of people being feckless), you might like to visit Positive Money to see their explanation of how the monetary system works.