Mobiles and Kids
I think these are the two key sentences in the whole article.
All of this is speculation. There are busybodies out there who want to tell everyone else what to do, based on speculation.
This is also a severe example of shoddy work. Researchers aren't supposed to be speculating, but researching. So, either the article is poorly written, and the "Researchers" Aren't researchers, but rather philosophers, or the researchers are not doing their jobs because they are speculating, trying to create information without data to support it.