Formed opinions happen all the time. We all walk around everyday setting things, and people, in place. You'd think we're setting the table for dinner. There is a certain level of comfort for humans when they can line things up.
The only problem is formed opinions are often flawed. Sometimes they can be fatally flawed.
When it comes to humans, we need to factor in the dynamic nature of how we're made. People are shaped by a lot more than you can know. And don't make the mistake of thinking a Facebook post is a true representation of the person's heart. Many people are fixated on being "ok." Not many are willing to be truly vulnerable. Living in an age of judgement makes vulnerability a risky proposition.
Organizations are a bit different. Their behaviors are driven almost solely by culture. For example, if the culture is dedicated to serving customers, then that behavior will reign and the formed opinion will follow. I've known more than a few leaders who found this difficult to accept. But in the end, it doesn't matter what your marketing outlets say. It's always about what you do. One last caution, as you form your opinions about organizations (people too):
One event does not make a trend.
As you pay more attention to your formed opinions, remember that humility is a key component in making sure your formed opinions are solid. It's important because when you're wrong you can admit it and when you're right you won't feel the need to prosecute. I throw this your way because we're all limited.