This is that political pundit trick of implying that when somebody who calls a stupid opinion, stupid, it means they're trying to get rid of your freedom to have an opinion, versus the reality that they're simply trying to get rid of the stupid.
Not that your opinion is stupid, or anything. But if it were...get rid of the stupid.
Could not have possibly said it better. Not at all saying Gaijin should not be allowed to share his opinion ... actually quite the opposite. I probably should thank him, because like I told him up above, it tells me all I need to know about him.
So, by all means, keep sharing these opinions. Transparency is good.