This happened on such a scale that I can't help but wonder if the results as seen in Portland, Vancouver, Sf ... were the intention.
"Wow! Homeless people still exist! In my city?! That's not very nice! And the police threw away the cover photo lady's tent and pepper-sprayed her friends sleeping bag? That's really not very nice! All to clean up the area for the visit of some official?"
The violence with which many camps are removed is abhorrent to many, as is the idea of shuffling them around for mere cosmetic purposes (not to actually get them into a better place), so there's a naive "everybody be nice! leave those poor people alone!" attitude that doesn't actually care about pesky details.
Since their experience is hypothetical and they're idealizing and romanticizing The Homeless, discussion on practical realities like the number of violent felons and sex offenders in camps is shut down with a classic "that never happens". They'll pretend it's some kind of made-up minority and not the bulk of people who can't/won't go to a shelter (i.e, because they have warrants or have been banned for bad behavior).
Sure, they got what they asked for, but I don't believe they ever really considered what they were asking for, beyond "stop being mean".
That is, the state does in fact have certain obligations, regardless of any personal feelings one may have.
Either they have been screaming that this is a disaster and nobody wanted to hear (or amplify) them, or they thought it could work on a fully voluntary basis. The latter despite them being in contact with homeless and/or drug addicts regularly. Neither explanation bodes well for civil society.
People don't start out being nice, altruistic and self sacrificing. That is socially conditioned and a learned behavior. However, we have conflated those positive traits as the base class of humanity, when it's really not.
I worry that we will need to return to widespread suffering just to relearn the same things we knew only a free short generations ago.