That wouldn't surprise me. It's certainly how criticism seems to often come about today. First the acknowledgement that someone else's view doesn't agree with one's own, then the reason for one's own superiority (which may or may not be valid or rational). As you said, complete rejection.
The need to notice contradictions before they can be criticised is a good point. I was just thinking about hypocrisy, which is usually something that we're not aware of until someone points it out (and even then some people will vehemently deny it). Though in that case it's the complete acceptance of one's own (distorted) view without consideration for others (or at least without due consideration of one's behaviour). So in that case lack of criticism is undesirable.