If those of us able have moved to secure a job (hundreds of miles) and avoid being homeless, why should someone not working (other than those in genuine need who we're trying to exempt from this discussion in the hope the goverment haven't totally lost touch with reality) have different choices?
Because if you're moving because of a job, you're moving to something. A new start, employment (which will bring you in touch with some sort of community), it's hopefully a positive step in some way.
If you're someone vulnerable, say second or third generation unemployed, maybe with low level mental health issues, or low self esteem because you've never worked, and you're moved miles from where you grew up, what do you have? No support network, no friends, a feeling perhaps of having been banished or socially cleansed because you're worth nothing, no prospects.