Do they sound like good parents to you?

I love them to death, they're my family but my aunt and uncle have 2 babies. One is going to be 2 years old and the other is going to be 5 months old. The 2 year old jumps on the couch and beds. She never shares, when you tell her sharing is caring she'll scream No. When you're chasing her playing she'll laugh and run away. But once you get close she'll cry No and hit you. When ever you tell her No she'll pout and cry throwing a huge fit over nothing. While my aunt and uncle don't give her a time out nor do they really do anything. They allow her to basically do whatever she wants. And sometimes when you're playing with the 5 month old she'll hit him and pout when you say that's not nice you shouldn't do that. And my uncle is over protective over her complaining about every thing my aunt does saying she shouldn't do this or that. But he just sits on his butt and never really helps or spends time with his kids unless my aunt is working very hard at her job. And the 5 month old can't even hold his head up and by now he should kind of be able to right? They always hold him, when you go to put him down he'll scream and cry bloody murder. And when you go to pick him up he'll stop and smile. They're always having him laying down so the back of his head is flat. Do you think this is good parenting or not? I mean I love them all, but with this I think they're not really being good parents. I shouldn't really judge them since I'm not a mom I'm 16 the only baby I have is my dog. But are they good parents or are their kids just behaving badly cause that's normal?