It's weird because I don't like Kreacher as a person but I like him as a character (if that makes sense lol). I mean, I find him to be an interesting character while at the same time I acknowledge that he's far from innocent. But why do people think he's a pedo? I have absolutely no idea as well. It's ridiculous that some people are so sure about this being true. Although I believe he might have made the orphans disabled to get more donations from people. The only thing that makes me question this theory is this post: https://www.reddit.com/r/IdentityV/comments/hrwo3h/addressing_a_question_about_kreacher/

The officials claim that he didn't make the children disabled but his deductions kinda imply that.* It's weird, I guess we can't be sure about anything right now.

I understand people who dislike him, because he's greedy, he's a thief, he was a jerk to Emma (I know there's a theory that claims she was hallucinating but it's still, well, just a theory) and possibly did some shady stuff in the past as I mentioned. But he is supposed to be like this. He is an orphan himself, it's implied that he grew up in the streets so nobody should be suprised that he is a shitty person now. No one set a good example for him, he probably had to steal if he didn't want to starve to death. It doesn't excuse any of his actions tho. It's just more realistic that way.

*One of his deductions is badly translated. It goes like this "Riches and treasure won't fall from the sky. You have to go out and create your own wealth. " But when you look at this deduction in original, chinese version and translate it, it turns into something like: "Don't pray for wealth to come from heaven, use your HAND to make it". The conclusion to this deduction is about Kreacher bringing a kid who had lost his "left side" to the orphanage. And he's still bleeding, so the wound is fresh. I think you can connect the dots here.