I did. Restricting children’s access to certain things is not ageism.

We can argue the merits of restricting children’s access to the internet, or certain books, or alcohol, or pornography, or whatever else. We can debate the merits of those various restrictions based on the benefits and costs to both the children and society at large.

But it is not ageism to attempt to protect children. It is not ageism even of the restriction is a bad idea. To claim it is ageism is an emotional appeal (“ageism bad!”), not a logical one.