.. is that its just an opinion put forth strongly. This doesn’t mean its more appropriate or better than other opinions. Actually, it shouldn’t be treated any different than other opinions.
It generally depends on the personality of the person stating it. Some people are more subtle in their statements and some prefer to be more affirmative.
A correct and well thought out opinion, is slightly different. In the sense, it doesn’t only focus on the pros of the opinion. It also highlights certain drawbacks, and gives a logical conclusion where pros outweigh the drawbacks. They’re much more educated and the ones which should gain more attention.
Other thing about strong opinion is, its emotionally backed. Its a major drawback. Emotion doesn’t always go well with objectivity and reasoning. If the same emotion is not shared by others in the group, it generally goes unnoticed.
Its extremely important how you put forward your opinion in a group and how you appreciate opinions from other members. Give more weightage to objective ones. Try to avoid emotional ones and strong(loud) ones.