Again, that's a lot of effort for people who won't even make the effort to read the article.
To be clear, checking the checkbox would not be required to add a comment. The checkbox is entirely optional.
> The only way to know someone read and understood the article
I'm not even expecting understanding. I can deal with people who misunderstand something they've read. Many issues debated here are complex. What's not helpful is for someone to just read the headline and then start spouting off about whatever comes to the top of their head, without reading anything.