I think this is a big part of whatever a professional may diagnose. The lack of parenting, the lack of interaction, face behind a phone, baby and child shoved behind the sofa (nevermind a cupboard under the stairs) any club he seems to have joined never lasted long it appears, anyone remember baby ballers? He now appears to be shoved in a not quite playroom out of sight in front of a screen most likely. Any interaction he has with his birth giver is staged, stilted and extremely controlled. He's never been able in my opinion (ironically from behind a screen ) to find out what he likes, who he is as a person, I'm sorry but 4 year olds are just ace, they are so funny and bloody brutal, their personalities are developing and you can see the little person they are becoming. She's missing out on so much, she doesnt even realise. Oh and take that sodding dummy out of Lennies mouth and let him speak.My non-professional opinion is that it’s not autism, it’s lazy parenting and laughing at him when he speaks instead of engaging with him.
She is mentally, emotionally and physically stunting the growth and potential of those children.
*whoops sorry for my ramble*