I just don’t think he’s a very expressive child to be fair. She said the other day that she was discussing with Josh how Wibble hadn’t interacted with anyone else but them and I think that explains it quite well. He’s the youngest of 6. Tullilah and Seb need a lot of attention, Edie is in and out to her Dads but has an extroverts character, so is quite a presence. Issac is quiet and Betsy is doing her best with him. His parents are both egocentric and communicate at the kids rather than with them.The most worrying thing to me in those videos is that Edie is talking, can she not see that Wilby does not say one word, not even a go when his parents are swinging him by the arms!
I say this as a parent with a child who had a speech and Language disorder and did not speak more than 5 words at 5!
I’m not surprised he doesn’t bother trying