I have a libinlaw that is an example of what you’re stating - that anything could be reported as child abuse.
My kids were in a homeschool publication this month.
My MIL was looking through it and was appalled and nearly “outraged” that the girls were all dressed so conservatively.
I teased her by going along.
“How dare they dress like that! They look so wholesome! There should be a law against that!”
My BIL doesn’t allow his toddler son to have sugar. We have long-time family friends, with whom we are not speaking currently, who almost reported him to CPS because he wouldn’t allow his son to have a cupcake at an Easter celebration. No sugar = child abuse?
Kudos to you for homeschooling your kids and dressing them appropriately!