Umm... this isn't plagiarism.

He wrote about the same subject, but near as I can tell he wrote with his own words and near as I can tell even his own data points (for example, he talks about the Commodore 64, and WIN.INI, and I see no reference to either in your much longer article).

I've got news for you, you aren't the first person to write about the fact that younger folks aren't learning computers like their predecessors. Nothing wrong here.