Yes. A huge distraction. Notice the adjective, indicating magnitude.

Where did they say laptops introduced the concept of distraction to school?

Have you ever heard of the term sarcasm? Maybe it was left out of the books you read in school.

Sarcasm is use of language, potentially caustic, potentially ironic or humorous, to mock someone or something, e.g. if I were to respond to your comment with "What a witty and clever response that totally adds value to the conversation".

What you did was reiterate the same point that @caldarons had already made themselves in the paragraph immediately following the one you are now quoting.

Also, it's hypocritical to mock @caldarons for your failure to understand what they wrote, while also blaming the people who reply to you for not understanding what you write.