I am definitely a hybrid of fan and critic with heavy leaning toward fan if only because I ain't paid to be a proper critic so I don't feel any obligations to present opinion in a fair and impartial manner. Besides, a lot of so-called expert critic opinion is a load of bollocks and filled with personal preferences - poor critiquing. Usually, opinions tend to run way too strong either positive or negative when in truth, most of the time a course is a course is a course. What is in the ground isn't often terribly different than any one of hundreds of courses - even the very good courses. Fans and critics alike latch onto stuff which they either like or dislike and that will colour the critique. For instance, i have a strong distaste for courses which aren't a comfortable walk. That one detail in and of itself may give me reason to "fail" a course even if I know it is unreasonable of me to expect certain courses to be a good walk. This sort of thinking in essence can be the difference between a fan and an archie. A critic needs to dig further and find out why a course is the way it is before he delivers an opinion. Otherwise, he is just giving us some rhetoric on what his likes and dislikes are. I don't really care about that except from a very small number of people and they don't tend to be from the industry. I would rather see a load of good pix with some text to help explain the pix then listen to an archie expose on the strategy of a hole.
I wouldn't go so far as to say folks don't change their minds in debates. Using myself again, I certainly have been persuaded that what I call unnatural golf can be excellent. Five years ago I didn't really buy into the idea of great golf looking unnatural. Painswick is another case in point. I don't really like the course because I think there is a lot of poor architecture there, but I can understand its value in the way it is a rule breaker in so many ways. However, I live 45 minutes away and only play it maybe once a year - I hate the opening hole - tee hee.
I certainly think there is a group think element on this site, but that doesn't mean it isn't for valid reasons. On the other hand, this site is a bit of a club and it should be expected that a certain amount of group think will exist if only because of that.
Ciao