GP said studies, plural. I cannot confirm that. But the linked study is consistent with what I observed in my child when he was a toddler.
There's plenty of studies that show that.
If you don't have anything useful to contribute, please be silent. This is not Reddit.
Please do your own research next time.
> The review indicated that an increase in the amount of screen time and an early age of onset of viewing have negative effects on language development, with older age of onset of viewing showing some benefits. Video characteristics, content and co-viewing also influences language development. This study demonstrates that the negative influences of screen time appear to outweigh the positive influences.