In the end though... your points just aren't valid for two simpler reasons.
1) All things equal, it is more important to play the games in order. Something you've never dismissed.
2) All the things you've mentioned that could bias someone who's played FF6... could also bias someone who's played FF7 first. Once again, making all things equal in this point.
You may not like it, and it may annoy you... however, it's just true. Sometimes the truth is annoying.