I totally agree. People can put on a false face online, and they can become a person that they aren't. I think it's because you can't see the person face-to-face, and more confidence is built behind the screen rather than in person.
I think most people are commenting in relation to proof and support for your claim. This will be an important part of your argument, especially because of the subjective nature of your claim.
You and Mitchell should comment on one another's posts. Here's his.