Sorry, but if you think that these are cases of simple glamorization of impulsiveness, you are completely misreading the writing, and totally missing several layers of irony and of internal conflict. The more you say, the more clearly you demonstrate this.
The claim that Buffy's actions are depicted as unqualifiably "righteous" is completely alien to the show as it actually exists. I'm speaking in general here, and of the conflicts Buffy faces at the time, not of the later consequences of a particular action. In the high-school seasons, Buffy is constantly torn between her schooling, her personal life and family, and her slaying, and nothing is the one and only right thing to do. That is what makes the artificial situation feel real, because it could be anybody facing any kind of real-life conflict. The kind of viewer-goosing "I know this is wrong, but it feels so good, and it's really the right thing" that so disfigures, say, Kindergarten Cop is not a feature of the heroes in BTVS.
And there's much more - to describe the teachers in the early BTVS as "clueless", for instance, suggests that you've totally missed the point of the early seasons and have conflated it with the later show where the premise has changed - but you're probably not interested. Remarks like "clueless or evil" and "the writers are trying to jerk me around" suggest to me that your complaint is not really with BTVS at all, but with some basic conventions of postmodern storytelling. It's fair enough not to like that, but I think you should just accept that this kind of writing is not for you, and drop it.
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The claim that Buffy's actions are depicted as unqualifiably "righteous" is completely alien to the show as it actually exists. I'm speaking in general here, and of the conflicts Buffy faces at the time, not of the later consequences of a particular action. In the high-school seasons, Buffy is constantly torn between her schooling, her personal life and family, and her slaying, and nothing is the one and only right thing to do. That is what makes the artificial situation feel real, because it could be anybody facing any kind of real-life conflict. The kind of viewer-goosing "I know this is wrong, but it feels so good, and it's really the right thing" that so disfigures, say, Kindergarten Cop is not a feature of the heroes in BTVS.
And there's much more - to describe the teachers in the early BTVS as "clueless", for instance, suggests that you've totally missed the point of the early seasons and have conflated it with the later show where the premise has changed - but you're probably not interested. Remarks like "clueless or evil" and "the writers are trying to jerk me around" suggest to me that your complaint is not really with BTVS at all, but with some basic conventions of postmodern storytelling. It's fair enough not to like that, but I think you should just accept that this kind of writing is not for you, and drop it.