To wonder why screens aren’t investigated as a cause of childhood behaviour issues?

Hmm. If you start a thread saying that your young child has behaviour issues and gets lots of screen time, I reckon you'll get more posters saying you should limit screen time than telling you to get them assessed for autism.

I agree with you tbh but it is hard when they are everywhere. I have a 3yo and we are getting to a stage where if we bump into a nursery friend in a cafe they are often engrossed in a tablet.

We have managed to avoid a tablet/phone use except for flights, the odd long car journey and I think maybe used a phone twice when really struggling in a restaurant. Always watching something rather than playing.

I will say ours watch TV, probably more than ideal but for example today, me and the 3yo are wiped out with a sickness bug and the 1yo has chickenpox so needs must. At least with TV we are all watching the same thing, and I’m more selective of what we put on rather than just being in their own world on a tablet.

YABU - screen time has been shown to be beneficial to neurodivergent children.

There are plenty of research papers and studies showing the link between screen time and poor behaviour. All listed with a quick (google).

There was also a recent study about the damage to children’s eyes.

Yet, children continue to have access to lots of screen time.

This one gives some positives but some very concerning negatives on mental health.
Poor language development, including interaction with others, has always been linked to poor behaviour, simply because the child is frustrated that they can't explain themselves. Screen time is adding to poor language development too.

pmc.ncbi.nlm.nih.gov/articles/PMC10353947/

YADNBU OP but prepare for a verbal kicking on this one!
The more time young children spend their faces buried in screens, the less time they’re interacting socially with others - or aren’t observing social interactions between adults.
Take restaurants as an example - toddlers/small children are learning all the time and taking cues from their parents. They watch how you speak to the person serving you, they learn from this. They learn table manners etc. how can the observe if they’re just sat watching shite on an iPad?