It only seems like a small number to you because (presumably) you don't care about the people harmed.
Its unclear how other than requiring the process to be perfect, and without any error at all, that the number could be much lower.
And such a requirement is, in practice, impossible. So requiring the number to be 0 is to require there to be no immigration enforcement at all.
Personally, I don't care if "enforcement" happens at all, though I don't expect you to care about that for the same reason you don't care about your neighbors.
What I do think is that if it was your mom that bad things were happening to, you'd have a different position on what "acceptable errors" look like.
The big difference here is that I care about my neighbors just as would care about my mother. You don't, and that's fine. Maybe you can get Grok to grow you a prothstetic soul or something.