I think it's because rough sleeping has been decriminalised
I appreciate that for an individual, it's terrible to be criminalised because you're forced to sleep rough
unfortunately, the relatively new law doesn't seem to cover encampments. That would have been an easy thing to cover.
i'm an ex Londoner, so I'm very familiar with the group that you mean
And they have been a problem for years, and every so often the authorities would go in and clear the camp. This is now much harder to do. Not impossible - but much harder.
editing to add - it's not an area I tend to hang around myself! But every so often I've had to go there for work and I would say from the ages of 20 something to 47, I'm very aware of their presence.
I believe this is a problem that is only going to increase as a result of the new law.