Earlier quoted context omitted.
What opinion is expressed here? There's a vague implication of "this is unfounded" they cannot even be bothered to put in clear words, much less make a case for, while trying to make up for that by repetition. So it's not okay to "think of the children", ever, but let's play good Samaritan for what is nothing more than a meme because it's a "valid opinion". Got it.
The observation is that whenever kids fixate on some new activity, the previous generation will always become extremely suspicious that it's harmful. If this hasn't been borne out in the past, then we can't take those suspicions as much evidence that there's anything to worry about.
There was a time when using x-ray machines in shoe shops seemed totally benign, like a fun, useful thing. Suspicions about that "new thing" as well as others were correct. Including here, that list starts with "comic book" and ends with "internet and facebook" addiction, which are absolutely worth studying.