How can a properly justified eviction be illegal under Vagrancy law?

As the Vagrancy law is being repealed today, anyone has the right to sleep rough and beg.

So, to me, I wonder, as this will be a legally allowed thing to do, how can a properly justified eviction be illegal? How can a council tell a tenant not to move out and intentionally make themselves homeless when, from today, being homeless is a perfectly legal situation to find oneself in?

And the courts will rule against a tenant who does not pay the rent, so will councils now be actively encouraging non-paying tenants to actively break the law when they have the right to leave the let and live outside?

Surely this must mean that councils will no longer be obliged to house people, anyone, although clearly children and the infirm/disabled/handicapped will need assistance.

I am not a legal expert, but I wonder what the Property118 community have to say about this?

Thanks,

Marita