These children, and all other kids on "reality" shows, are having their private lives put on display so that complete strangers (including pedophiles and other twisted individuals) can "enjoy" them. They are being used so that greedy networks and greedy parents can make boatloads of money off them. These children did not consent to this. They did not say, "Sure, film my potty training," or "No problem, film my bowel disimpaction," or "What fun! Show my temper tantrums and meltdowns!" They can't possibly comprehend how negatively this will affect them in the future.
These kids have no rights and no power. They are held up to ridicule and scorn and mockery because of their actual behavior. These are not kid actors playing a role. These reality kids are being judged on who they actually are, not on a character they are portraying. Many of them will be damaged beyond repair.
The last line in bold underscores the terrible damage being done to these children. You (and countless other people) "can't stand" a young child you don't even know. This is heartbreaking.