A fallacy can be an opinion, though it's based on a false or wrong notion:

Code: 
fallacy [ˈf?ləsɪ]
n pl -cies
1. an incorrect or misleading notion or opinion based on inaccurate facts or invalid reasoning
2. unsound or invalid reasoning
3. the tendency to mislead
4. (Philosophy / Logic) Logic an error in reasoning that renders an argument logically invalid
[from Latin fallācia, from fallax deceitful, from fallere to deceive]
You're weird, dude. First you said people can type as they want to, that those who didnt like it should get over it. Now you're saying that people who type with their caps lock on should be banned.
You do not compute.

And to close this discussion, I never said anyone is flawless, though you keep pressing the same button. Making mistakes is natural to all of us. Deciding to make mistakes based on the fact of - allegedly - being cool is plain dumb. Sure you have the right to disagree regarding this issue, just try not to prove somebody is wrong based on your misunderstanding and fallacies.

And I'm done.
Take care.