I think everyone has a right to hold an express an opinion and, if that is what "I am entitled to my opinion" means, I wouldn't discourage them from saything that.

I also think that everyone should be able to back their opinions up with reasoning (preferably non-flawed reasoning) but even if they don't they are still entitled to their opinion, they just don't know why they hold that opinion.

I'd like to encourage people to explain their reasoning, but I also think that they don't have to.

It is everyone else that should be educated to not consider anyone elses opinion unless it can be backed up with reasoning.