Again, I'm not disagreeing that they're there mostly of their own volition. That their bad decisions in most cases caused them to be there. I think most would agree with that as the default. That doesn't mean there are some people who had no choice and were relegated into it through little to no fault of their own.
And heaven forbid that we all be held to such a high standard that any mistake or bad decision we may have made be counted against us that stringently if the time ever came that we needed a helping hand.
Regardless of all that, the problem exists. And to fix the underlying factors, we would eat a practical and cost-effective way to provide treatment and counseling for them. While the farm idea does that, it also runs the risk of forced incarceration for people who really didn't commit any crimes worthy of prison.
And I get that you would probably have zero problem with them being rounded up and forced to go there, but I tend to think that the vast majority of Americans would have a little bit of a problem with that once the practice got started, and they saw what that truly looked like.