Responses

That depends on their environment I think. I've known a 5 year old that was extremely social and constantly around high schoolers (her mother is a high school teacher), and her vocabulary was through the roof. She could have easily passed for an 8 or 9 year old in terms of development. Not to say that that's what happened to these two, since it doesn't look like they were socialized enough, but it could happen.
The only problem I have with this is that 5 is way to young a age lmao, like unrealistically young. Shouldved made it atleast 8 to 10.
I know five year olds and they're literally infants. Above 8 year kids are saassy af tho but nvm