I think that complete abolishment of prisons is completely unrealistic. However I'd be interested to see what research they had to back up their statements. For example- I don't think that short prison sentences are necessarily effective for people who have committed crimes such as theft to fuel drug addiction- when money could go into better drug rehabilitation/ housing (loads of people are released from prison homeless only to re-offend etc).
This is is very much dependent on the type of crime and viewing the sex differences in offending:
Women and men commit different types of offences and for different reasons. Overall women commit significantly fewer serious and fewer violent offences than men. For example:
• Women make up only 3% of all arrests for sexual offences
• Women make up 5% of murder convictions receiving a life sentence
• Offences for which multiple men and no women received life sentences in a given year include: rape, attempted murder, GBH, robbery and kidnapping
By contrast, some “lower-level” offences are over-represented amongst women. For example:
• 70% of TV Licence evasion offences are committed by women.
• Women commit 70% of all truancy offences
• Women commit 55% of all benefit fraud
• 30% of all prosecutions for shoplifting are of women
These differences in offending are reflected in the sentencing patterns for men and for women, with women, considered as a group, receiving shorter custodial sentences than men, considered as a group. For example, 72% of immediate custodial sentences for women were for 6 months or less.
There are strong links between women’s acquisitive crime, for example theft and benefit fraud, and their need to provide for their children. These links are considerably less likely in the case of male acquisitive crime. Coercion is also an important factor in female crime: almost 50% of women committed their offence to support the drug use of someone else, usually their male partner. This compares to under a quarter of men
www.keep-prisons-single-sex.org.uk/women-in-prison
TLDR: avoiding prison for shorter sentences related to poverty and drug addiction makes sense to me and having more community detox/ rehabilitation/ psychiatric and social services as part of parol. But violent crimes or sexual assaults- definitely still prison. So, what evidence do they have for the breakdown of offenses for the group they advocate for?