Honestly, that first paragraph read as if you didn't read my whole post, in particular the part in the second parentheses.
I would agree that when DCFS workers are new, especially, those that are OCD may tend to over-report. However, they also get reviewed, and their reports have to be detailed. It's not just "the house was dirty"; it includes things like "there was dried fecal matter in four rooms in which the kids play" or "there was a strong urine smell in the kids bedroom" or "I saw fleas in the living room".
By contrast, when you offer something so generalized and unqualified as "Becasue if they do not like something that you do then can use that as ground to take away your children.", you include so many things that they can not do, legally. No matter how religious a caseworker is, they can't take my kids away because I'm an atheist. They can't take them away based on having a specific bedtime, or having books on the floor instead of shelves, or because I discipline them in a specific fashion (as long as I don't leave bruises), or any number of other things. There are specific criteria that they look for. I agree it's a shame that they can't be as objective as "y ppm of urea and ammonia" in the atmosphere instead of "strong smell of urine", but in then the standards themsevles would still be subjective ("Why y ppm instead of 2y ppm?").